2x^2+16x=-8

Simple and best practice solution for 2x^2+16x=-8 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+16x=-8 equation:


Simplifying
2x2 + 16x = -8

Reorder the terms:
16x + 2x2 = -8

Solving
16x + 2x2 = -8

Solving for variable 'x'.

Reorder the terms:
8 + 16x + 2x2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + 16x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(4 + 8x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(4 + 8x + x2)' equal to zero and attempt to solve: Simplifying 4 + 8x + x2 = 0 Solving 4 + 8x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + 8x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 8x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 8x + x2 = 0 + -4 8x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 8x + x2 = -4 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = -4 + 16 Reorder the terms: 16 + 8x + x2 = -4 + 16 Combine like terms: -4 + 16 = 12 16 + 8x + x2 = 12 Factor a perfect square on the left side: (x + 4)(x + 4) = 12 Calculate the square root of the right side: 3.464101615 Break this problem into two subproblems by setting (x + 4) equal to 3.464101615 and -3.464101615.

Subproblem 1

x + 4 = 3.464101615 Simplifying x + 4 = 3.464101615 Reorder the terms: 4 + x = 3.464101615 Solving 4 + x = 3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 3.464101615 + -4 Combine like terms: 4 + -4 = 0 0 + x = 3.464101615 + -4 x = 3.464101615 + -4 Combine like terms: 3.464101615 + -4 = -0.535898385 x = -0.535898385 Simplifying x = -0.535898385

Subproblem 2

x + 4 = -3.464101615 Simplifying x + 4 = -3.464101615 Reorder the terms: 4 + x = -3.464101615 Solving 4 + x = -3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -3.464101615 + -4 Combine like terms: 4 + -4 = 0 0 + x = -3.464101615 + -4 x = -3.464101615 + -4 Combine like terms: -3.464101615 + -4 = -7.464101615 x = -7.464101615 Simplifying x = -7.464101615

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.535898385, -7.464101615}

Solution

x = {-0.535898385, -7.464101615}

See similar equations:

| 7-3b=28 | | -(6-7a)-(12+6a)-18=-(5-7a)+(-a)+4 | | 1p=-10 | | 9/5x+4/5-8=5.4 | | -6=1z | | 5(g-8)-7=103 | | x+32=13 | | -6(-7a)-(12+6a)-18=-(5-7a)+(-a)+4 | | m^2-64=12m | | -180+12x=-5x+58 | | 17u+12-3(5u-4)=3+3(u+7) | | -6w-8z= | | 92-4x=32x+24 | | 10.6+(-4x)=-1.4 | | 180+12x=-5x+58 | | 6x-1+5x+17=126 | | 2x+98=180 | | -3x-1.2=0.9 | | -7m+6-9(m-2)=2m-(9m-8)-4m+1 | | H-8=15 | | 4x^2-29x+25=-9x+4 | | (-3)2x(-10)2= | | 1(x-6)=1-x | | 7n*8n= | | -[2z-(13z+6)]=6+(10z+3) | | x^3-7x^2+16x+4=0 | | 3y+13y+8=52 | | ln(x^2+4)=0 | | x-(-4)= | | 4(g-2)+3g=5(g-4) | | 5.8f+9.6(20-f)=80.80 | | t=7/4s+22 |

Equations solver categories