4x^2+25x-125=0

Simple and best practice solution for 4x^2+25x-125=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 4x^2+25x-125=0 equation:


Simplifying
4x2 + 25x + -125 = 0

Reorder the terms:
-125 + 25x + 4x2 = 0

Solving
-125 + 25x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-31.25 + 6.25x + x2 = 0

Move the constant term to the right:

Add '31.25' to each side of the equation.
-31.25 + 6.25x + 31.25 + x2 = 0 + 31.25

Reorder the terms:
-31.25 + 31.25 + 6.25x + x2 = 0 + 31.25

Combine like terms: -31.25 + 31.25 = 0.00
0.00 + 6.25x + x2 = 0 + 31.25
6.25x + x2 = 0 + 31.25

Combine like terms: 0 + 31.25 = 31.25
6.25x + x2 = 31.25

The x term is 6.25x.  Take half its coefficient (3.125).
Square it (9.765625) and add it to both sides.

Add '9.765625' to each side of the equation.
6.25x + 9.765625 + x2 = 31.25 + 9.765625

Reorder the terms:
9.765625 + 6.25x + x2 = 31.25 + 9.765625

Combine like terms: 31.25 + 9.765625 = 41.015625
9.765625 + 6.25x + x2 = 41.015625

Factor a perfect square on the left side:
(x + 3.125)(x + 3.125) = 41.015625

Calculate the square root of the right side: 6.404344229

Break this problem into two subproblems by setting 
(x + 3.125) equal to 6.404344229 and -6.404344229.

Subproblem 1

x + 3.125 = 6.404344229 Simplifying x + 3.125 = 6.404344229 Reorder the terms: 3.125 + x = 6.404344229 Solving 3.125 + x = 6.404344229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.125' to each side of the equation. 3.125 + -3.125 + x = 6.404344229 + -3.125 Combine like terms: 3.125 + -3.125 = 0.000 0.000 + x = 6.404344229 + -3.125 x = 6.404344229 + -3.125 Combine like terms: 6.404344229 + -3.125 = 3.279344229 x = 3.279344229 Simplifying x = 3.279344229

Subproblem 2

x + 3.125 = -6.404344229 Simplifying x + 3.125 = -6.404344229 Reorder the terms: 3.125 + x = -6.404344229 Solving 3.125 + x = -6.404344229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.125' to each side of the equation. 3.125 + -3.125 + x = -6.404344229 + -3.125 Combine like terms: 3.125 + -3.125 = 0.000 0.000 + x = -6.404344229 + -3.125 x = -6.404344229 + -3.125 Combine like terms: -6.404344229 + -3.125 = -9.529344229 x = -9.529344229 Simplifying x = -9.529344229

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.279344229, -9.529344229}

See similar equations:

| 7x-25=3x+11 | | 8/3x+3/2-2/3=11/2 | | 8/3x+3/2-2/3=11/3 | | 5d-c-2c-3d= | | 4r+12-2r=3r-9 | | X(18+8x)=0 | | r^2+r-90=0 | | 4=8(a+2) | | -22=2x+2(-2x+-3) | | 4(p-5)=4 | | 16-(3m+6)=5+3m-13 | | In(x+4)-In(8)=In(5) | | 2*[25e(0.18t)]= | | 21-9+2= | | -3x+-2(-2x+4)=-14 | | 4x-3x-5x=16 | | -7n+3(5n-5)=-2n+35 | | n+(-7)=1 | | (2y+6)(6y-10)=0 | | x+4=[x-2] | | -4x+2(3x+2)=28 | | (3x+6)=13 | | 5-2(x-1)=3-x | | h^2-17h=-72 | | 3x+-2=x+4 | | 10a^2+61a+72=0 | | 7(9y+12)+4y=-27 | | (5z-2)(6z-7)=0 | | -38=5x+7(-x+-2) | | 8x+5y=-8 | | 11.5+-3y=-48.5 | | x^4=1.16 |

Equations solver categories