Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 773652: I am having trouble factoring the following quadratic equation. I have tried grouping and pulling out a common term but I just can't get it. Any help would be appreciated.

Click here to see answer by ramkikk66(644)

Question 773656: How do you work out this worded problem? A father�s age is the square of his son�s age (x). In 20 years� time the father will be 3 times as old as his son. What are the ages of the father and son? Thanks a lot
Click here to see answer by ramkikk66(644)

Question 773694: Hi, how do you work out this question? A rectangular painting is to have a total area (including the frame) of 1200 cm2. The painting is 30 cm long and 20 cm wide, find the width of the frame. Thanks so much!
Click here to see answer by josgarithmetic(39613)

Question 773772: (3r-7)-(4r-15)=6
Click here to see answer by Tatiana_Stebko(1539)

Question 773814: Solve by using the quadratic formula. (Enter your answers as a comma-separated list.)
24x2 − 47x − 21 = 0
Click here to see answer by Alan3354(69443)

Question 773963: what is the answer of 12-x^2 in rewriting quadratic functions from f(x)=ax^2+bx+c to f(x)=a(x-h)^2+k and vice versa
Click here to see answer by oscargut(2103)

Question 774071: What is exactly is a quadratic equation? What is the standard form of a quadratic equation? Why is tit important to be able to write a quadratic equation in standard form?

Click here to see answer by DrBeeee(684)

Question 774225: hi, could u please help me with this question.. the X^2 + Y^2 has throw me off!
Q. Solve for x and y the equations..
x+2y=6
x^2+y^2=17
Many Thanks :)
Click here to see answer by josmiceli(19441)

Question 774236: Hi, can you work out this equation? If so how many possible solutions are there? x^2 −3x+10=0
Thanks a lot! :)
Click here to see answer by oscargut(2103)

Question 774270: Determine the quadratic equation with integral coefficients having the roots: 3/2 and -1/2

Click here to see answer by ankor@dixie-net.com(22740)

Question 774480: The Kwon family has a rainwater catchment system they use to water their garden. The storage tank is 80 inches deep. After 3 hours of rain, the depth of water in the tank is 37 inches. After 5 hours, the depth is 60 inches. If the rain continues to fall at the same rate, how many hours will it take to fill the tank? Round your answer to the nearest tenth.
Click here to see answer by ankor@dixie-net.com(22740)

Question 774669: You have taken over an abandoned project of drilling a water well. After 3 hours of drilling at a rate of 3.5 feet per hour, the depth is 27.5 ft.
How deep was the hole before you began drilling?
Click here to see answer by Cromlix(4381)

Question 774686: A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse. How many units were assembled before the shift started?
Click here to see answer by josmiceli(19441)

Question 774694: I am having trouble telling if the equation has one, two, or no solutions:
Click here to see answer by MathLover1(20849)

Question 774692: Please let me know why does the parabolic equation has two roots though the parabola touches the x-axis only once.
Click here to see answer by MathLover1(20849)

Question 774799: x^2 + 2 = 6
Click here to see answer by Alan3354(69443)

Question 774810: (x + 4)^2 = 3
Click here to see answer by jim_thompson5910(35256)

Question 774851: (2x � 1)^2 � 9 = 0

please show the work im having trouble figuring this out
Click here to see answer by josgarithmetic(39613)

Question 774872: Determine whether the following trinomial is a perfect square. x^2 + 4x + 4
Click here to see answer by KMST(5328)

Question 774877: Find the constant term that should be added to make the following expression a perfect-square trinomial. x^2 + 7x
Click here to see answer by josmiceli(19441)

Question 775069: I need help with this question
the area of a rectangle is 192 cm2
calculate its dimensions knowing that its length is triple its width
Click here to see answer by rfer(16322)

Question 775107: i need help solving the equation graphically and then checking the results algebraially
Click here to see answer by sofiyac(983)

Question 775167: I am having a problem with this problem. Just not understanding at all, can you please assist?
Perform the indicated operations. X ^2-9x/4x-24 * x^2-36/4x^2-36x * 8x/x^2+5x-6
Click here to see answer by ankor@dixie-net.com(22740)

Question 775259: 16x^2-24x+7=0
Click here to see answer by jim_thompson5910(35256)

Question 775290: 3x^2+13x-10=0
Click here to see answer by jim_thompson5910(35256)

Question 5195: please help me solve this equation using the quadratic formula

2x*1=2
2=2
Click here to see answer by Igboze(1)

Question 775403: what is the radus and hight of of a cubic centimeters with the volume of 60

Click here to see answer by sofiyac(983)

Question 775426: m + 2m =0
Click here to see answer by sofiyac(983)

Question 775426: m + 2m =0
Click here to see answer by MathLover1(20849)

Question 775452: i need help solving the equation graphically and then checking the results algebraially
Click here to see answer by sofiyac(983)

Question 775456: i need help solving the equation graphically and then checking the results algebraially
Click here to see answer by sofiyac(983)

Question 775433: 8x^2-2x-3=0 solve for x. write both solutions, separated by a comma.
Click here to see answer by sofiyac(983)

Question 775554: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2+16x
Click here to see answer by josgarithmetic(39613)

Question 775550: Use the quadratic formula to solve the following equation. x^2 = �x + 7
Click here to see answer by mananth(16946)

Question 775548: The height h in feet of an object after t seconds is given by the function:
h = �16t2 + 40t + 8. How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Click here to see answer by mananth(16946)

Question 775546: Use the quadratic formula to solve the following equation. 2x^2 + 3x � 3 = 0
Click here to see answer by sofiyac(983)

Question 775692: Different methods for solving and show work:
(9x-1)^2=1
Click here to see answer by Tatiana_Stebko(1539)

Question 775539: how do I solve for m in PQ/T = L/MO I tried PQ/T/L/O = M I also tried cross multipliing LT/PQO = PQOM/PQO to get LT/PQO = M and I also tried by multipliing by the reciprical of O/L to get PQO/TL = M but I have no way to check which one is right.
Click here to see answer by ankor@dixie-net.com(22740)

Question 775814: Factor this quadratic expression:
16x^2-81
Click here to see answer by MathLover1(20849)

Question 775824: I got two questions the first is a quadratic expression:
9k^2+66k+21
Next is a quadratic equation:
3k^2-39k=-120
Click here to see answer by tanjo3(60)

Question 775823: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2+x
Click here to see answer by tanjo3(60)

Question 775822: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2-8x
Click here to see answer by tanjo3(60)

Question 775821: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2+2x
Click here to see answer by tanjo3(60)

Question 775820: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2-12x
Click here to see answer by tanjo3(60)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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