2x^2+7x-625=0

Simple and best practice solution for 2x^2+7x-625=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x^2+7x-625=0 equation:


Simplifying
2x2 + 7x + -625 = 0

Reorder the terms:
-625 + 7x + 2x2 = 0

Solving
-625 + 7x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-312.5 + 3.5x + x2 = 0

Move the constant term to the right:

Add '312.5' to each side of the equation.
-312.5 + 3.5x + 312.5 + x2 = 0 + 312.5

Reorder the terms:
-312.5 + 312.5 + 3.5x + x2 = 0 + 312.5

Combine like terms: -312.5 + 312.5 = 0.0
0.0 + 3.5x + x2 = 0 + 312.5
3.5x + x2 = 0 + 312.5

Combine like terms: 0 + 312.5 = 312.5
3.5x + x2 = 312.5

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 312.5 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 312.5 + 3.0625

Combine like terms: 312.5 + 3.0625 = 315.5625
3.0625 + 3.5x + x2 = 315.5625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 315.5625

Calculate the square root of the right side: 17.764078923

Break this problem into two subproblems by setting 
(x + 1.75) equal to 17.764078923 and -17.764078923.

Subproblem 1

x + 1.75 = 17.764078923 Simplifying x + 1.75 = 17.764078923 Reorder the terms: 1.75 + x = 17.764078923 Solving 1.75 + x = 17.764078923 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 17.764078923 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 17.764078923 + -1.75 x = 17.764078923 + -1.75 Combine like terms: 17.764078923 + -1.75 = 16.014078923 x = 16.014078923 Simplifying x = 16.014078923

Subproblem 2

x + 1.75 = -17.764078923 Simplifying x + 1.75 = -17.764078923 Reorder the terms: 1.75 + x = -17.764078923 Solving 1.75 + x = -17.764078923 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -17.764078923 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -17.764078923 + -1.75 x = -17.764078923 + -1.75 Combine like terms: -17.764078923 + -1.75 = -19.514078923 x = -19.514078923 Simplifying x = -19.514078923

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.014078923, -19.514078923}

See similar equations:

| 6x-3x+4-2x=2x+4 | | 4m-8+2m=-5m+6m-3 | | -111+21=2 | | x-4/51/5 | | G+3=5.7 | | (7x^2-2x+3)+(-6x^2+x+5)= | | 0.66(12+y)=6-.25(9-y) | | 3v+16=49 | | -111+21=15w | | 6x-3x+4-2x=3x+8 | | -5=x/7-30 | | 48=2w+16 | | (y-39)-(y+38)= | | 13g+6-12g=11 | | 5v-8=57 | | 3/x=-7 | | 100-6x=10 | | (42+x)+x=138 | | 8x-2-5x+7=5x+3 | | (24x^2-7xy-6y^2)/(3x-2y) | | 8x-2-5x+7=4x+9 | | 8x-2-5x+7=5x+6 | | A/9=0.5 | | -x+5=10+4y | | 8x-2-5x+7=7x+3 | | 8x-2-5x+7=4x+8 | | x^2+45x-567=0 | | 7x-5x=-2-8x | | 8x-2-5x+7=3x+3 | | -7(k+3)=77 | | 3/5x=x-8 | | -4x+7=17 |

Equations solver categories