X^2+8X+8X=64

Simple and best practice solution for X^2+8X+8X=64 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+8X=64 equation:


Simplifying
X2 + 8X + 8X = 64

Reorder the terms:
8X + 8X + X2 = 64

Combine like terms: 8X + 8X = 16X
16X + X2 = 64

Solving
16X + X2 = 64

Solving for variable 'X'.

Reorder the terms:
-64 + 16X + X2 = 64 + -64

Combine like terms: 64 + -64 = 0
-64 + 16X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 16X + 64 + X2 = 0 + 64

Reorder the terms:
-64 + 64 + 16X + X2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 16X + X2 = 0 + 64
16X + X2 = 0 + 64

Combine like terms: 0 + 64 = 64
16X + X2 = 64

The X term is 16X.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16X + 64 + X2 = 64 + 64

Reorder the terms:
64 + 16X + X2 = 64 + 64

Combine like terms: 64 + 64 = 128
64 + 16X + X2 = 128

Factor a perfect square on the left side:
(X + 8)(X + 8) = 128

Calculate the square root of the right side: 11.313708499

Break this problem into two subproblems by setting 
(X + 8) equal to 11.313708499 and -11.313708499.

Subproblem 1

X + 8 = 11.313708499 Simplifying X + 8 = 11.313708499 Reorder the terms: 8 + X = 11.313708499 Solving 8 + X = 11.313708499 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + X = 11.313708499 + -8 Combine like terms: 8 + -8 = 0 0 + X = 11.313708499 + -8 X = 11.313708499 + -8 Combine like terms: 11.313708499 + -8 = 3.313708499 X = 3.313708499 Simplifying X = 3.313708499

Subproblem 2

X + 8 = -11.313708499 Simplifying X + 8 = -11.313708499 Reorder the terms: 8 + X = -11.313708499 Solving 8 + X = -11.313708499 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + X = -11.313708499 + -8 Combine like terms: 8 + -8 = 0 0 + X = -11.313708499 + -8 X = -11.313708499 + -8 Combine like terms: -11.313708499 + -8 = -19.313708499 X = -19.313708499 Simplifying X = -19.313708499

Solution

The solution to the problem is based on the solutions from the subproblems. X = {3.313708499, -19.313708499}

See similar equations:

| 75.1-(-27.3)= | | 4(x+1)=6(2x-2) | | 4y+7-y=10+3y | | -7p=-7 | | 8+y=0 | | 10y+4=24 | | 5+8*2= | | 15=35-5x | | 2(2t+2)-6(t-1)=6-t | | -8(x+2)-(5x-6)=-14x | | X^3-7x^2+x+12=0 | | 10y+2=98 | | 8b+4(-7b+5)=7-7b | | 4x^2+13x+6=0 | | 81x^2+12x+4=0 | | 2y+6=26 | | 4m/1=-10/3 | | 785=5x^3 | | 4(2t+2)-6(t-1)=6-t | | 9(z-3)=212z | | -4=3x-5 | | 2y+6=12 | | 9(-3)=12z | | 44=(x+4) | | (2x+2)(x+1)=-9 | | 2x-4+3x=8x-5 | | 113-69=y | | 24/1/2+6= | | -18=8d-14d | | -0.06x^2+1.2x-4=0 | | x/0.7=2.1 | | 3w+12w=105 |

Equations solver categories