x^2-16x=64

Simple and best practice solution for x^2-16x=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^2-16x=64 equation:


Simplifying
x2 + -16x = 64

Reorder the terms:
-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 = 19.313708499 x = 19.313708499 Simplifying x = 19.313708499

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 = -3.313708499 x = -3.313708499 Simplifying x = -3.313708499

Solution

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

See similar equations:

| 3(4d-20)=6(2d-10) | | 24x-16=19x | | -3(4y-3)+4(6y+1)=43 | | 14-c/4=9 | | 2.7-1.8y=4.5 | | -(x+1)=5 | | x-4.5=11.7 | | 5y-1.4=6 | | 5(b+10)=2(2b-22) | | 4(p-7)=3 | | 6z+10=34 | | 9y-8=8y-7 | | 2(2k+1)=2(k-3) | | 8a-10-5a=20 | | 6=1-2 | | 4(3-n)=3(n+2) | | 10x+4=2x+20 | | 3-4x=2(x-4) | | 3x+2=2(x-4) | | 10x+6=8x-(-4) | | 9x-14=7x+20 | | -2(x-1)=-4 | | 3(x-7)+25=x+9 | | 8x+3=15x-5 | | 25t^2-25t-300=0 | | 4.35p+13.7=5.6 | | 15x-1=8-3x | | -4=-2(x-4) | | 12(x-3)=10x-13 | | 54=73*n | | 73=54*n | | 7(x+5)=3x+12 |

Equations solver categories