Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 452309: Please help me solve this problem!
Find the values of b and c in the following equation if the roots of the equation are {-6, -1}: x^2 + bx + c = 0
Click here to see answer by htmentor(1343)

Question 452354: It says to use the Quadratic formula to solve each question.
How do I solve 3k^2+k=6? I'm stumped.
There is no number in front of the k like every other problem in the book.

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

Question 452318: Factor x^3-8
I got the answer (x-2)(x^+2x+4) but I don't know how
Please show me step by step to get the answer. Thanks
Click here to see answer by confusedgirl81(14)

Question 452709: Hello,
I'm just a little confused by what the following question is asking:
What two numbers are represented by each of the following?
1. -6 plus or minus (sqrt 6) I think it is asking for the answer of -6 + (sqrt 6) and -6 - (sqrt 6) since nothing can be factored out of (sqrt 6).
2. 4/3 plus or minus (i sqrt 2) /3 I think the answers would be (4+ (isqrt2))/3 and ((4 - (i sqrt 2))/3
but it could be 1 + ((1+isqrt2))/3 and 1 - ((1+isqrt2))/3
and the next question:
what must be added to make the given expression a trinomial square?
m^2 - 4m + ? I think the answer is 4, if the equation were factored it would be (m-2)(m-2)
a^2 + 12a + ? not sure how to do this equation however.

please show me how to correctly do these equations. Thank you
Click here to see answer by ilana(307)

Question 452977: It says to find the solutions to the quadratic equation x^2+12x+36=7. Would you suggest quadratic formula?
Click here to see answer by rwm(914)

Question 452932: hey i am studying for my final and i am stuck on the quadratic formula, i have looked mutible places and even my text book doesnt have it, dumb right? well i remember it was like X=-b+or - square root of something and then it is all divided by 2a, i missed the days in class we where working on this and ya, thanks i appreciate this :)
Click here to see answer by ankor@dixie-net.com(22740)

Question 453121: x^2+10x+25=8?
Click here to see answer by Sarpi(32)

Question 453487: Solve the equation by completing the square.
a. Write irrational numbers in simplest radical form.
b. Describe each step as you go.
X2 + 4x � 8 = 0
Solve the equation by using the quadratic formula. Use √( ) and � , if you want.
a. Write irrational numbers in simplest radical form.
b. Explain each step as you go.
X2 + 4x � 8 = 0

Click here to see answer by stanbon(75887)

Question 453695: an art museum charges $10 for an adult admission. The museum estimates they will lose 15 adult visitors per day for each one dollar increase in price. If the museum averages 300 adult visitors a day, which is the most profitable adult admission price?
Click here to see answer by htmentor(1343)

Question 453785: How do I write a quadratic equation using -6, and -4 as solutions.
Click here to see answer by algebrahouse.com(1659)

Question 454040: solve by the square root property 2(x+2)^2=16
Click here to see answer by MathLover1(20849)

Question 454047: Solve the inequality below. Enter your answer as an inequality, such as w > 2/3 or s < -4.
-9 < x - 7
Click here to see answer by stanbon(75887)

Question 454061: please help me with this problem....
12(x-4)-(x+2)=(x+2)(x-4)
solve for x using the quadratic formula.

Click here to see answer by rfer(16322)

Question 454084: Please help me with this problem.....
Give exact and approximate solutions to three decimal places.
(x-7)^2=81

Click here to see answer by MathLover1(20849)

Question 454097: Please help me with this problem? I have tried several solutions and keep getting stuck!
During the first part of a trip, a canoeist travels 53 miles at a certain speed. The canoeist travels 2 miles on the second part of the trip but 5mph slower. The total time for the trip is 4 hours. What was the speed on each part of the trip?
Click here to see answer by rwm(914)

Question 454123: How do I write a quadratic equation with -6,-4 as solutions?

Click here to see answer by solver91311(24713)

Question 454399: I need help solving this by graphing 5x-8y=40
8y-5x=-40 is this graph consistent or inconsistent?
Click here to see answer by mananth(16946)

Question 454469: A research study has shown that 500 people attend a tournament when the admission price is $2. In the championship game, the price will be considered for an increase: for every 20cent increase, 20 fewer people will attend. What price will maximize the revenue? What is the value of the maximum revenue?
Click here to see answer by htmentor(1343)

Question 454480: I really appreciate the help i'm getting from this website! Question: A rectangle has perimeter P. Find the maximum possible area of the rectangle. Thank you so so so so so so much for your time and effort!
Click here to see answer by rfer(16322)

Question 454569: I am very confused on this whole process, could you explain?
Click here to see answer by solver91311(24713)

Question 454626: what is the answer to this equation while rounding to the nearest hundreth? x^2+3x+2=0

Click here to see answer by ichudov(507)

Question 454629: what is the answer to this equation while rounding to the nearest hundreth? x^2+5x=6
Click here to see answer by ichudov(507)

Question 454832: What is the answer to x^2+6*x=16
I got to the point where I moved the "16" to the left and I make the whole equation zero and then I have no clue what to do next. I know that the answer is (2,-8) but I want to know how to get the answer.

Thanks for your help.
Click here to see answer by richwmiller(17219)

Question 455107: How do I find the vertex and line of symmetry of f(x)=-3(x+2)^2?
Click here to see answer by rfer(16322)

Question 455104: How do I find the vertex and line of symmetry with this equation? f(x)=4x^2
Click here to see answer by rfer(16322)

Question 455108: How do I find the solutions and x-intercepts of 3x^2-5x-7=0?
Click here to see answer by nerdybill(7384)

Question 455094: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function and graph the function.
f(x)=12x^2-12x+4
Click here to see answer by nerdybill(7384)

Question 455105: How do I find the exact and approximate solutions of this equation? x^2+3x-5=0
Click here to see answer by nerdybill(7384)

Question 453352: The total hang time is given by T(h)=sqrt h/2 where h is the maximum height . If a person jumps 2 feet off the ground how many seconds is the person in the air.
I'd be thankful
Click here to see answer by nmo9772(2)

Question 455307: Solve the equation. Describe the strategy you used to get your solution and tell why you chose that strategy. x^2 - 25 = 0
Click here to see answer by algebrahouse.com(1659)

Question 455367: Write the quadratic equation whose roots are -2 and 5, and the leading coefficient is 2. (Use the letter x to reepresent the variable. Thank you!
Click here to see answer by oberobic(2304)

Question 455273: If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t.   How many seconds does it take for the ball to reach its maximum height, and what is this height?
Click here to see answer by Alan3354(69443)

Question 455605: what is the answer to 6xsquared-24=0
Click here to see answer by rfer(16322)

Question 455619: i need help with these two quadratic equations, please(:
3(x-4)squared=18
and the other one..
4(x+9)squared=24
if anyone doesnt mind helping me out it would be so awesome!!
Thanks!
Click here to see answer by richwmiller(17219)

Question 455658: identify the graph for y=x^(2)-6x+10
Click here to see answer by robertb(5830)

Question 455805: I need to write a quadratic equation for the solution:
b^2-4ac>0
Please help!
Thanks Gina
Click here to see answer by Alan3354(69443)

Question 455795: write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form: ax^2+bx+c=0
-√6,7√6
please help,
Thanks
Gina
Click here to see answer by Alan3354(69443)

Question 455815: what is the quadratic equation for 4x+20=0
Click here to see answer by Alan3354(69443)

Question 455840: solve this quadratic equation 6x2-7x-3=0
Click here to see answer by nerdybill(7384)

Question 455846: What are the solutions of the quadratic equation below?

3x^2 - x = 11
Click here to see answer by rfer(16322)

Question 455850: I am stuck on this portion of the equation:
12(x-4)-(x+2)=(x+2)(x-4)
I know that you have to take everything on the right side and put it to the left. I have tried different ways and I am not getting the answer.
The answer is x^2-13x+42
If you can show me each step to come to that answer so I can use it for future equations to go off of. Thank You
Click here to see answer by Alan3354(69443)

Question 455887: I need help with this problem
The first part of a trip a canoeist travels 59 miles. the canoeist travels 17 miles on the second part of the trip at a speed 5mph slower. The total time for the trip is 4hrs. What was the speed on each part of the trip?
Help!
Thanks
Gina
Click here to see answer by richwmiller(17219)

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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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