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

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

 Question 576541: How do you solve for x , y , z x+5y+5z=-10 x+y+z=2 x+2y+3z=-3 Click here to see answer by solver91311(17077)

 Question 576668: x^3=500 Click here to see answer by rfer(12729)

 Question 576148: Give an example, show the work, and determine if the example has one, two, or no real solution. Click here to see answer by richard1234(5390)

 Question 576831: 3(x^2-3) = 35x + 19 please use the quadratic formula thankssss Click here to see answer by ankor@dixie-net.com(15746)

 Question 577118: Solve x^2-10x+25=0 Click here to see answer by jim_thompson5910(28705)

 Question 577218: how can I do w^2-14w+24=0 for a quadratic formula Click here to see answer by Alan3354(31513)

 Question 577538: x^2-2x-3=5 Click here to see answer by jim_thompson5910(28705)

 Question 5549: the width of a rectangle is 3 inches less than its length. The area of the rectangle is 340 square inches. What are the length and widthof the rectangle? Click here to see answer by ankor@dixie-net.com(15746)

 Question 577599: What is the vertex of x-3=2(y+1)^? What is the vertex of y+1=1/2(x-3)^? What is the vertex of x=1/2y^-y+3? Click here to see answer by solver91311(17077)

 Question 577587: Factorize A^2+B^2+AB Click here to see answer by richard1234(5390)

 Question 577452: how many quadratic equations are there whose roots when squared gives the same quadratic equation Click here to see answer by richard1234(5390)

 Question 577883: -5/3(x+2)^2-1/6 in standard form Click here to see answer by jim_thompson5910(28705)

 Question 577908: I am trying to solve the quadratic equation using the method from India. I need assistance with each step. The problem is 2x^2-3x-5=0 There are 6 steps and I have gotten to step 3 Step 1 2x^-3x=5 Step 2 8x^2-12x=20 Step 3 -3 is the original x term, therefore: 8x^2-12x+9=29 Step 4, now I am to take the square root of each side. This is where I am confused, need help here through step 6. Click here to see answer by stanbon(57960)

 Question 578005: Solve. (x+16)(x-10)(x+7)>0 Click here to see answer by KMST(1936)

 Question 578107: Hello, i have been given this maths question, please could you help me solve it. I have tried putting it into a quadratic equation then i realised that it cannot be factorised. The question is: prove that the line y+x=-2 is a tangent to the curve y^2 = 8x Thank you Click here to see answer by Edwin McCravy(8999)

 Question 578394: Can someone please help me solve this algebra problem. I set up the problem the best way, I knew how. 1/4 =3- 2x-1/x+2 This problem is suppose to be set up as a fraction 1/4 and 2x-1/x+2 Click here to see answer by stanbon(57960)

 Question 578802: In the series 0, 3, 8, 15,__, What is the next number?the next number would be 24 as the difference is 2 Click here to see answer by asthatakkar(1)

 Question 579253: what does x equal, using the quadratic formula, for x^2-3x-4=0???? Click here to see answer by nerdybill(7003)

 Question 579676: I have k(squared)=49 and I need the steps to working it out along with the answer please...(: Click here to see answer by richard1234(5390)

 Question 580183: I need help with this equations: 1) write y=4x^2-32x+66 in vertex form 2)use the quadratic formula to solve the equation 4x^2-x+3=0 Click here to see answer by dfrazzetto(277)

 Question 580406: 2x^2+12x+1=0 Click here to see answer by dfrazzetto(277)

 Question 580432: If the graph of the quadratic function h is shifted vertically 4 units downward, then reflected in the x-axis, and then shifted horizontally 3 units to the left, the resulting graph is the parabola f(x) = x^2. What is the rule of the function h? h(x)= _____________ What is the vertex of its graph? Click here to see answer by josmiceli(9817)

 Question 580484: I need to graph the quadratic function f(x)= -1/2(x+4)^2+6 I've determined the parabola opens down due to the negative coefficient; however, I'm having a problem solving it due to the fraction -1/2. Wouldn't (x+4)^2 be x^2+16? Click here to see answer by jim_thompson5910(28705)

 Question 580522: Whar is the roots? 2x^2+9x-5=0 Click here to see answer by jim_thompson5910(28705)

 Question 580560: how do i determine whether a given value is a solution to an equation for example X^2 - 2x + 15 = 0;3 Click here to see answer by lwsshak3(6755)

 Question 580632: 3p^2-7p-40 Click here to see answer by dfrazzetto(277)
 Question 580632: 3p^2-7p-40 Click here to see answer by Alan3354(31513)

 Question 580660: Page 367 Evaluate each of the following quadratic functions for the given value of x. Show all your work. f(x) =x^2 + 5x + 7; f(4) g(x) =25 -x^2; g(-5) h(x) = -x^2 +4x-1; h(-2) f(x) =5x^2 -18;f(0) g(x) =8x^2 -3x +10; g(2) h(x) -3x^2 +15; h(10) Click here to see answer by Alan3354(31513)

 Question 581080: I don't quite understand what the question is asking. Could you help me solve this problem? Directions: Logical Reasoning - Consider the equations and use the quadratic formula to justify the statement. If is positive, then the equation has two solutions. Click here to see answer by josmiceli(9817)

 Question 581377: What are the final values or solutions for x to this problem: x^2+2x+10=0 where a=1, b=2,=10 Click here to see answer by stanbon(57960)

 Question 581391: x2-5x=-6 Click here to see answer by algebrahouse.com(1079)

 Question 581608: Problem: x^2+6x+5=0 1)Factor 2)Completing Square 3) Quadratic Formula Click here to see answer by stanbon(57960)

 Question 581663: I am trying to solve a factoring problem with quadratic trinomials that have a leading coefficient greater than 1. My problem is: (2x^2+14x-10). I am having trouble finding numbers that multiply to -20 and add to 14. Help would be great! Thank you! Click here to see answer by jim_thompson5910(28705)

 Question 581832: solve. 2x^2=5-3x Click here to see answer by jim_thompson5910(28705)

 Question 581995: Factor. s^2+14s+49 Click here to see answer by jim_thompson5910(28705)

 Question 582057: Hello, Please help me solve this equation: Give the exact and approximate solutions to three decimal places. Click here to see answer by Alan3354(31513)

 Question 582171: The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag? I tried this several ways and still came up with 199.32 miles per hour which my teacher says is wrong. Please help. Click here to see answer by Alan3354(31513)
 Question 582171: The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag? I tried this several ways and still came up with 199.32 miles per hour which my teacher says is wrong. Please help. Click here to see answer by stanbon(57960)
 Question 582171: The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag? I tried this several ways and still came up with 199.32 miles per hour which my teacher says is wrong. Please help. Click here to see answer by josmiceli(9817)

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