# Questions on Algebra: Quadratic Equation answered by real tutors!

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 Quadratics: solvers Practice! Answers archive Lessons Word Problems In Depth

## Tutors Answer Your Questions about Quadratic Equations (FREE)

 Question 1309: use i notation to express any nonreal complex numbers. How do I go about getting this answer? I don't understand this stuff! Thanks in advance 2x^2 – 6x + 1 = 0 Click here to see answer by JamieL38(6)

 Question 1320: y=-5xsquared Click here to see answer by smartdude17(30)

 Question 1344: I have bean asked to consider in detail the question x2 =-5x-6 I know how to solve the equation, however I have a feeling I could be asked why you put it equal to zero? Could you please tell me the reason along with any answers to any other questions you think I may be asked.?It's for an interview for teacher training. Thankyou Click here to see answer by abhinav75(8)

 Question 1443: y = -3x(squared) I need to find out the vertex, roots, if opens upward or downward, different points in order to graph parabola, and using the quadratic equation for something. Click here to see answer by AnlytcPhil(1276)

 Question 1282: i dont understand how you can turn this into a quadratic equation, The sum of the squares of three consecutive integers is 434. Find the integers. Help please. - Alex Click here to see answer by usyim88hk(157)

 Question 1274: SOLVE 2Y^2-3Y+5=0 Click here to see answer by usyim88hk(157)

 Question 1449: 2x^2+5x+3=0 Click here to see answer by jennyxnguyen(2)

 Question 1515: I'm having a problem solving 7x^2 = 84 or 7xsquared =84 thank you Click here to see answer by jose.sanchez740@dolphin.csuci.edu(1)

 Question 1512: I am having problems with the quatratic formula. My problem is -x^2-3x+5=0 The solution I came out with does not look correct. Please help! Click here to see answer by usyim88hk(157)

 Question 1510: Can you show me step by step on how to work or solve a quadratic formula problem like, 25x^2+4=-20x ? Click here to see answer by usyim88hk(157)

 Question 1470: how do you graph y= -x^2 +2 Click here to see answer by usyim88hk(157)

 Question 1464: q=VQ/I FOR I Click here to see answer by usyim88hk(157)

 Question 1496: x square minus two x minus three equals zero x^2-2x-3 = 0 Click here to see answer by usyim88hk(157)

 Question 1524: Hello I am having problems solving this quadratic equation by using the quadratic formula, could you please help? x4 - 6x2 + 5 = 0 Click here to see answer by AnlytcPhil(1276)

 Question 1499: The height, h, in metres, of an infield ball t seconds after being hit is given by the formula: h=20t-5t^2. How long is the ball in the air? Click here to see answer by khwang(438)

 Question 1675: Question regarding quadradic equations in intermediate algebra: Determine the dimensions of a rectangle with a perimeter of 20 that encloses the greatest area. The perimeter is the sum of all sides of the rectangle. Is there another shape that would be more efficient (higher area to perimeter ratio?) Click here to see answer by khwang(438)

 Question 1672: 2-part question on quadratic equations in intermediate algebra: A quadratic equaation can have zero, one or two solutions (zeroes) in the study of quadratic formulas and the discriminant. 1. What about an equation of order 3 like: ax^3+bx^2+cx+d=0 2. What is the minimum number of solutions or zeroes? What is the maximum? Can there be two? Click here to see answer by khwang(438)

 Question 1695: -10x^2+11x+24=20 Click here to see answer by smartdude17(30)

 Question 1711: Quadratic_Equations/1699: Using the quadratic formula for x in the equation 2x^2=11x-9 results in which of the following values: A. -9/2 or 1 B. 9/2 or -1 C. 9/2 or 1 D. -9/2 or -1 Thanks for any help you can give me on this question!! 1 solutions Answer 553 by smartdude17(3) on 2005-05-07 13:43:30: When you do all the work, it comes to the answer C. 9/2 and 1. That means you got it right!!!!!!!!!! Can someone show me how you derive the answer to this question. I need to know how to figure this out as well. (Guess I should have said that...lol) Click here to see answer by smartdude17(30)

 Question 1694: Why are there usually 2 solutions in a quadratic equation? Click here to see answer by smartdude17(30)

 Question 1671: I have no clue how to do this. I am working on quadratic functions and their graphs in intermediate algebra. This is one question with three parts: A. Write the function y=3(x-2)^2+6 in the form of Y=ax^2 +bx+c, and find the vertex of the parabola using the formula x=-b/2a B. Repeat part (a) with the functions y=-4((x-5)^2-9 and y=3(x+2)^2-6. C. What is the vertex for a parabola that is written in the form y=a(x-h)^2+k? Explain your answer. Click here to see answer by smartdude17(30)
 Question 1671: I have no clue how to do this. I am working on quadratic functions and their graphs in intermediate algebra. This is one question with three parts: A. Write the function y=3(x-2)^2+6 in the form of Y=ax^2 +bx+c, and find the vertex of the parabola using the formula x=-b/2a B. Repeat part (a) with the functions y=-4((x-5)^2-9 and y=3(x+2)^2-6. C. What is the vertex for a parabola that is written in the form y=a(x-h)^2+k? Explain your answer. Click here to see answer by longjonsilver(2297)

 Question 1760: I need to come up with the general equation of a quadratic function for the following word problem. Can you help me get started please? A large awning is being designed for a hotel entrance and drive. The roof is to be a section of a parabola, with the vertex attached to the hotel wall 16 feet abve the ground, and supported by 10 foot wall posts that are 12 feet away from the hotel wall. Come up with a general eqaution of a quadratic function that would model the roof of the awning. Thanks for ANY help. I'm completely stuck on how to go about this problem algebraically. Noelle marknoni@comcast.net Click here to see answer by longjonsilver(2297)

 Question 1754: what is the vertex of the quadratric equation y=x^2-6x+9 Click here to see answer by longjonsilver(2297)

 Question 1770: What is the divide and squeeze method for solving quadratic equations? Click here to see answer by longjonsilver(2297)

 Question 1767: How do you determine if an equation in a quadratic equation? Click here to see answer by longjonsilver(2297)

 Question 1766: Okay, I need to solve for this using quadratic equations, I have the problem and the answer, can't make the two connect. f(x)=7/x + 7/x+4, f(x) = 1 Result should be 5(+-)(sq.rt of) 53 Click here to see answer by longjonsilver(2297)

 Question 1782: In a Quadratic Equation of (z+5)(z+1)=10z how to you work it. Click here to see answer by longjonsilver(2297)

 Question 1791: When using the quadratic formula what if the answer does not equal 0 like this one; -x + 6 = 5x^2 Click here to see answer by smartdude17(30)

 Question 1723: solve for x x^2+3x+3=0 Click here to see answer by smartdude17(30)
 Question 1723: solve for x x^2+3x+3=0 Click here to see answer by longjonsilver(2297)

 Question 1697: Solve the inequality, state the solution set using interval notation 1/2x^2 is greater than/or equal to 4-x Click here to see answer by smartdude17(30)

 Question 1803: Why are there usually two solutions in quadratic equations Click here to see answer by longjonsilver(2297)

 Question 1810: how would you explan quadratic equations step-by-step Click here to see answer by longjonsilver(2297)

 Question 1830: i need help completing the square for the equation: x2+6x-7=0! please :) thanks Click here to see answer by Ne0(6)
 Question 1830: i need help completing the square for the equation: x2+6x-7=0! please :) thanks Click here to see answer by longjonsilver(2297)

 Question 1829: How do you find the equation of the parabola passing through the points (3,1), (2,3), and (0,-5) Click here to see answer by longjonsilver(2297)
 Question 1829: How do you find the equation of the parabola passing through the points (3,1), (2,3), and (0,-5) Click here to see answer by Ne0(6)

 Question 1828: Iam being asked to solve a quadratic equation whose zeros were -4 and 7 Click here to see answer by longjonsilver(2297)

 Question 1834: x2-13x+36 Click here to see answer by longjonsilver(2297)

 Question 1691: okay, I simplified y2+9+9y=0 into (-9+ - sq. route of 45) over 2 using the quadatic formula, how do I simplify that further Click here to see answer by longjonsilver(2297)

 Question 1854: Solve by Factoring x^2=13x+48 Click here to see answer by longjonsilver(2297)

 Question 1867: wat is the solution to this equation? n + 18 + 2n = -12 a.) n = -10 b.) n = -2 c.) n = 1/2 d.) n = 6 e.) n = 9 Click here to see answer by longjonsilver(2297)

 Question 1857: Solve by factoring x^2=13x+48 and x^2-x-6=0 Click here to see answer by longjonsilver(2297)

 Question 1858: Use the quodrofic formula to solve 2x62+5x=0 3x^2=6x-8 Click here to see answer by longjonsilver(2297)

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