Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE) Get help from our free tutors ===> Algebra.Com stats: 2014 tutors, 419791 problems solved View all solved problems on Quadratic_Equations -- maybe yours has been solved already! Become a registered tutor (FREE) to answer students' questions. If you need immediate math help from PAID TUTORS right now, click here. (paid link) Click here to see problems AND answers on one page Question 334784: 20x=400 x=? can u explain this Click here to see answer by benazir.sj@gmail.com(109)   Question 334780: can you help me with this problem with a step by step of the eqaution 5x-4/5x+4=2/3 Click here to see answer by benazir.sj@gmail.com(109)   Question 334780: can you help me with this problem with a step by step of the eqaution 5x-4/5x+4=2/3 Click here to see answer by mananth(12270)   Question 334761: Find the Least Common Denominator of the following: 2x/7x^2+8x+1 and 1/5x^2-4x-1 I am trying to help my cousin and can't remember how to solve these. Thank you! Click here to see answer by mananth(12270)   Question 334835: Find all the roots of the following polynomial in the complex number system. f(x)=x^3-8x^2+36x-80 Click here to see answer by Fombitz(13828)   Question 334882: (4x-5)/(2-x) = -(9/2) Click here to see answer by Fombitz(13828)   Question 334809: 2x^2+9x+4=0 I could really use some help with this problem. Click here to see answer by scott8148(6628)   Question 334906: Here's my question: What's the answer to this equation? 13/8x+3/2+x=-123/16 Click here to see answer by ankor@dixie-net.com(15656)   Question 334931: 4x^3 is greater or less than 16x Click here to see answer by Fombitz(13828)   Question 334936: Solve x2 - 4x - k = 0. a) For what values of k the equation has only one solution? b) For what values of k are the solutions real? c) For what values of k are the solutions imaginary? Click here to see answer by Alan3354(30993)   Question 334995: How do i work out 16x2-8x+1=0 and also 2x2=4x+1 Click here to see answer by jim_thompson5910(28595)   Question 334995: How do i work out 16x2-8x+1=0 and also 2x2=4x+1 Click here to see answer by checkley77(12569)   Question 335131: Can you explain and do the steps to solve this equation: Click here to see answer by solver91311(16897)   Question 335140: I just cant solve this equation.... 25x^2+16=40x Click here to see answer by stanbon(57361)   Question 335168: √x^4+ 6x^2 + 9 Click here to see answer by benazir.sj@gmail.com(109)   Question 335091: ( ((((a)^2)^2)*4a^4) / ((3/2a))^8 ) + (-sqrt(-1)) Click here to see answer by Fombitz(13828)   Question 335216: (square root of x +1) to the power of 2 Only x is squared not the plus one. And I need help simplifying it. Click here to see answer by Fombitz(13828)   Question 333948: a quadratic function has an equation that is distinguished by having a highest power of what on "x", the independent variable Click here to see answer by Fombitz(13828)   Question 335279: Determine the value of y in the following equation: y = sec (3) (0) Click here to see answer by Fombitz(13828)   Question 335324: Determine the nature of the solutions of the equation. x^2+6=0 Click here to see answer by Fombitz(13828)   Question 335323: Determine the nature of the solution of the eqation. 7t^2-8t=0 Click here to see answer by solver91311(16897)   Question 335436: Snookers lumber can convert logs into either lumber or plywood. In a given day, the mill turns out twice as many units of plywood as lumber. It makes a profit of $20 on a unit of lumber and $50 on a unit of plywood. How many of each unit must be produced and sold in order to make a profit of 412, 360? Please help, I am so lost! Click here to see answer by solver91311(16897)   Question 335403: solve by factoring x^2-13=0 Click here to see answer by Fombitz(13828)   Question 335604: Determine the equation of the axis of symmetry. y = -5x2 - x + 9 what is the answer to this ? ive tried multiple times and im almost out of timeeeee ? Click here to see answer by Alan3354(30993)   Question 335604: Determine the equation of the axis of symmetry. y = -5x2 - x + 9 what is the answer to this ? ive tried multiple times and im almost out of timeeeee ? Click here to see answer by Fombitz(13828)   Question 335359: sloving quadratic equation x^2-5x+6=0 Click here to see answer by Fombitz(13828)   Question 335690: I am looking at an example of a quadratic equation x^2 - 4x - 7 =0 using the quadratic formula I come up with 4 (+or-)(-4^2-4(1)(-7))/2 the instructor simplified this to x = 4(+or-)2(11^1/2) I don't see where the number 11 came from or how the 2 was pulled out of the square can someone explain. I will have a similar question to this according to the teacher in a quiz next week and I need to understand this. Thank-you. Click here to see answer by Fombitz(13828)   Question 335690: I am looking at an example of a quadratic equation x^2 - 4x - 7 =0 using the quadratic formula I come up with 4 (+or-)(-4^2-4(1)(-7))/2 the instructor simplified this to x = 4(+or-)2(11^1/2) I don't see where the number 11 came from or how the 2 was pulled out of the square can someone explain. I will have a similar question to this according to the teacher in a quiz next week and I need to understand this. Thank-you. Click here to see answer by stanbon(57361)   Question 335708: 〖(x-5)〗^2=16 Click here to see answer by Fombitz(13828)   Question 335716: Determine the nature of the solution of the equation. x^2+6=0 A) 2 real solutions B) 2 imaginary solutions C) 1 real solution Click here to see answer by Fombitz(13828)   Question 334932: 4(x-2)^2=9 Click here to see answer by Fombitz(13828)   Question 335714: Determine the nature of the solution of the equation. 7t^2-8t=0 A) 2 real solutions B) 2 imaginary solutions C) 1 real solution Click here to see answer by solver91311(16897)   Question 335768: solve I could use some help with this problem please. Thank you... Click here to see answer by stanbon(57361)   Question 335769: solve please help... Thank you... Click here to see answer by Earlsdon(6287)   Question 335770: I am having trouble understanding this question could someone please help me? QUESTION: Is it possible for the graph of a quadratic function to have only one x-intercept, if the vertex is off the x-axis? Why or why not? thank you Click here to see answer by Fombitz(13828)   Question 335742: y2 + 3y – 18 Click here to see answer by Fombitz(13828)   Question 335746: 3/2x+1/4(x-2)=10 Click here to see answer by Fombitz(13828)   Question 335761: 5x(x − 1) −7 = 4x(x − 2) Click here to see answer by Fombitz(13828)   Question 335717: The number of tickets sold each day for an up coming performance of Handel's Messiah is given by N(x)=-0.4x^2+8.8x+12, where x is the number of days since the concert was 1st announced. When will the daily tickets sales peak and how many tickets will be sold that day? Click here to see answer by jsmallt9(3296)   Question 335917: How do I find the vertex and y-intercept of y = x² + 8x + 11, and how do I write it in standard form? Click here to see answer by Edwin McCravy(8909)   Question 335940: solve by applying the quadratic formula; all radicals should be simplified as far as possible. show your work. I could use some help with this problem please. Thank you Click here to see answer by jim_thompson5910(28595)   Question 335943: use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function. Show your work; could someone please help me with this problem. thank you Click here to see answer by jim_thompson5910(28595)   Question 335966: solve could someone please help me with this problem? Click here to see answer by jim_thompson5910(28595)   Question 335894: How do I solve the following equation by the square root method? (3y+6)^2=36 Click here to see answer by checkley77(12569)   Question 336007: QUESTION: a ball is throw downward from a window in a tall building. the distance traveled by the ball in t seconds is ,where s is in feet. how long (to the nearest tenth) will it take the ball to fall 97 feet? show your work. I could really use some help with this problem Thank you Click here to see answer by Alan3354(30993)

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