2x^2+8x-136=0

Simple and best practice solution for 2x^2+8x-136=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+8x-136=0 equation:


Simplifying
2x2 + 8x + -136 = 0

Reorder the terms:
-136 + 8x + 2x2 = 0

Solving
-136 + 8x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-68 + 4x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-68 + 4x + x2)' equal to zero and attempt to solve: Simplifying -68 + 4x + x2 = 0 Solving -68 + 4x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '68' to each side of the equation. -68 + 4x + 68 + x2 = 0 + 68 Reorder the terms: -68 + 68 + 4x + x2 = 0 + 68 Combine like terms: -68 + 68 = 0 0 + 4x + x2 = 0 + 68 4x + x2 = 0 + 68 Combine like terms: 0 + 68 = 68 4x + x2 = 68 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 68 + 4 Reorder the terms: 4 + 4x + x2 = 68 + 4 Combine like terms: 68 + 4 = 72 4 + 4x + x2 = 72 Factor a perfect square on the left side: (x + 2)(x + 2) = 72 Calculate the square root of the right side: 8.485281374 Break this problem into two subproblems by setting (x + 2) equal to 8.485281374 and -8.485281374.

Subproblem 1

x + 2 = 8.485281374 Simplifying x + 2 = 8.485281374 Reorder the terms: 2 + x = 8.485281374 Solving 2 + x = 8.485281374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 8.485281374 + -2 Combine like terms: 2 + -2 = 0 0 + x = 8.485281374 + -2 x = 8.485281374 + -2 Combine like terms: 8.485281374 + -2 = 6.485281374 x = 6.485281374 Simplifying x = 6.485281374

Subproblem 2

x + 2 = -8.485281374 Simplifying x + 2 = -8.485281374 Reorder the terms: 2 + x = -8.485281374 Solving 2 + x = -8.485281374 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -8.485281374 + -2 Combine like terms: 2 + -2 = 0 0 + x = -8.485281374 + -2 x = -8.485281374 + -2 Combine like terms: -8.485281374 + -2 = -10.485281374 x = -10.485281374 Simplifying x = -10.485281374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.485281374, -10.485281374}

Solution

x = {6.485281374, -10.485281374}

See similar equations:

| 3(7x+6)=10-(2-x) | | 5x^2+41x=36 | | 4+4(x-5)=5-2(x-9) | | -2(x+5)=-2(3x+4)+19 | | -y=-11.5x+22 | | 5b+15=32 | | (5y+3)(5-Y)=0 | | y=(6x^2-ln(x))*(6x^2-ln(x)) | | 5x+2+6x+13=180 | | 11.5x-y=22 | | y-3=3-2Y | | -9x^2+10=5 | | =26y | | 6x+2-2x=-6x | | -2(7-6)=-36 | | 6x+4=x+16 | | 6x+2=x+16 | | 57+8x=60+5 | | 11.5x+y=12 | | 4x-15+2x-10=x+4+2x-9 | | 4x-15+2x-10=x+4+2x-4 | | 5a-3b+10c+d=0 | | 400=5x+8y | | X^2=10-25 | | 93x-12+3x-4=2x-9+3x-6 | | 32-52x=200 | | -y^2+9x^2-8y-16=0 | | (6.3-5.0)x+(-4.32-3.75)y= | | y=sin(ln(x^3)) | | 85x-x+7=17+2x | | 6(x+2)=x+16 | | y=-4+(4+x) |

Equations solver categories