8x^2+2x-12=0

Simple and best practice solution for 8x^2+2x-12=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 8x^2+2x-12=0 equation:


Simplifying
8x2 + 2x + -12 = 0

Reorder the terms:
-12 + 2x + 8x2 = 0

Solving
-12 + 2x + 8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-6 + x + 4x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-6 + x + 4x2)' equal to zero and attempt to solve: Simplifying -6 + x + 4x2 = 0 Solving -6 + x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.5 + 0.25x + x2 = 0 Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + 0.25x + 1.5 + x2 = 0 + 1.5 Reorder the terms: -1.5 + 1.5 + 0.25x + x2 = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + 0.25x + x2 = 0 + 1.5 0.25x + x2 = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 0.25x + x2 = 1.5 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.25x + 0.25 + x2 = 1.5 + 0.25 Reorder the terms: 0.25 + 0.25x + x2 = 1.5 + 0.25 Combine like terms: 1.5 + 0.25 = 1.75 0.25 + 0.25x + x2 = 1.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (x + 0.5) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + 0.5 = 1.322875656 Simplifying x + 0.5 = 1.322875656 Reorder the terms: 0.5 + x = 1.322875656 Solving 0.5 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.322875656 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.322875656 + -0.5 x = 1.322875656 + -0.5 Combine like terms: 1.322875656 + -0.5 = 0.822875656 x = 0.822875656 Simplifying x = 0.822875656

Subproblem 2

x + 0.5 = -1.322875656 Simplifying x + 0.5 = -1.322875656 Reorder the terms: 0.5 + x = -1.322875656 Solving 0.5 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.322875656 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.322875656 + -0.5 x = -1.322875656 + -0.5 Combine like terms: -1.322875656 + -0.5 = -1.822875656 x = -1.822875656 Simplifying x = -1.822875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.822875656, -1.822875656}

Solution

x = {0.822875656, -1.822875656}

See similar equations:

| -8(-5u+v-6)= | | -9/3-(-3) | | 3.489.8= | | x^2+2x=84 | | n+0.11=6.9 | | 3(n+4)=16 | | -x^4+2x^2+3=0 | | 8(5-y)= | | 9(0)+2y=7 | | w=3n+5m | | 16x-9=0 | | 36-x=0 | | (v)(v)5(v)2= | | 86-53= | | (2x^2)+10x-6= | | x^4+0x^3-4x^2+0x-45=0 | | (u+9)9= | | r+0.23=3.4 | | 5x^3-10x^2+5x=0 | | 82x+112x=180 | | 30+20x=40+15x | | (y+5)2= | | 4[y-8]=-12 | | 45=-9[e+8] | | 2x-20=3y | | 3x+42=18x+12 | | 2/3=7/9z11/9 | | 7x+10(11)=4 | | 0.6(0.1x+0.5)= | | 5x-(3x+2)=5x-41 | | 7(0)+10y=4 | | 7(x)+10(11)=4 |

Equations solver categories