x^2+8x+96=165

Simple and best practice solution for x^2+8x+96=165 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 x^2+8x+96=165 equation:


Simplifying
x2 + 8x + 96 = 165

Reorder the terms:
96 + 8x + x2 = 165

Solving
96 + 8x + x2 = 165

Solving for variable 'x'.

Reorder the terms:
96 + -165 + 8x + x2 = 165 + -165

Combine like terms: 96 + -165 = -69
-69 + 8x + x2 = 165 + -165

Combine like terms: 165 + -165 = 0
-69 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '69' to each side of the equation.
-69 + 8x + 69 + x2 = 0 + 69

Reorder the terms:
-69 + 69 + 8x + x2 = 0 + 69

Combine like terms: -69 + 69 = 0
0 + 8x + x2 = 0 + 69
8x + x2 = 0 + 69

Combine like terms: 0 + 69 = 69
8x + x2 = 69

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 = 69 + 16

Reorder the terms:
16 + 8x + x2 = 69 + 16

Combine like terms: 69 + 16 = 85
16 + 8x + x2 = 85

Factor a perfect square on the left side:
(x + 4)(x + 4) = 85

Calculate the square root of the right side: 9.219544457

Break this problem into two subproblems by setting 
(x + 4) equal to 9.219544457 and -9.219544457.

Subproblem 1

x + 4 = 9.219544457 Simplifying x + 4 = 9.219544457 Reorder the terms: 4 + x = 9.219544457 Solving 4 + x = 9.219544457 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 = 9.219544457 + -4 Combine like terms: 4 + -4 = 0 0 + x = 9.219544457 + -4 x = 9.219544457 + -4 Combine like terms: 9.219544457 + -4 = 5.219544457 x = 5.219544457 Simplifying x = 5.219544457

Subproblem 2

x + 4 = -9.219544457 Simplifying x + 4 = -9.219544457 Reorder the terms: 4 + x = -9.219544457 Solving 4 + x = -9.219544457 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 = -9.219544457 + -4 Combine like terms: 4 + -4 = 0 0 + x = -9.219544457 + -4 x = -9.219544457 + -4 Combine like terms: -9.219544457 + -4 = -13.219544457 x = -13.219544457 Simplifying x = -13.219544457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.219544457, -13.219544457}

See similar equations:

| R-17=15 | | 5ln(2x+2)=22 | | 2x^3+x^2-10x=0 | | -8-5(1+4p)= | | 0y=0x-2 | | 0.333333x+0.333333(2x-15)=3.5 | | 2.8=8.6+y | | y^2+y+0.7=1 | | -x-3(6-4x)= | | 0.8x+0.7=3.1 | | y^2+y+0.7= | | 0.25p=4.5 | | -4(1-6k)-6k= | | 4.2x=18 | | 10x^2-6=0 | | 4x+3y+20=180 | | log(4)(-5x)=2 | | 8x-1=x+13 | | 7x+3+2x=30 | | -6x+4(6x)=0 | | -log(x)=5.3 | | 70x+1500=y | | x^2-20x+20y=0 | | (X+2)(x+3)=x^2+5x+6 | | 2x-10+7x=5(3x-3)+2 | | 9-2(1+4d)=-25 | | 2508-x=0.045x | | -4x+2-x+3x= | | x+q=nm+rm | | 2x+5=2(x+7) | | x+0.02x+0.11x+0.0022x=133599.6 | | 2x-3+5x-10=10x-12 |

Equations solver categories