x^2+16x+64=7

Simple and best practice solution for x^2+16x+64=7 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=7 equation:


Simplifying
x2 + 16x + 64 = 7

Reorder the terms:
64 + 16x + x2 = 7

Solving
64 + 16x + x2 = 7

Solving for variable 'x'.

Reorder the terms:
64 + -7 + 16x + x2 = 7 + -7

Combine like terms: 64 + -7 = 57
57 + 16x + x2 = 7 + -7

Combine like terms: 7 + -7 = 0
57 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-57' to each side of the equation.
57 + 16x + -57 + x2 = 0 + -57

Reorder the terms:
57 + -57 + 16x + x2 = 0 + -57

Combine like terms: 57 + -57 = 0
0 + 16x + x2 = 0 + -57
16x + x2 = 0 + -57

Combine like terms: 0 + -57 = -57
16x + x2 = -57

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 = -57 + 64

Reorder the terms:
64 + 16x + x2 = -57 + 64

Combine like terms: -57 + 64 = 7
64 + 16x + x2 = 7

Factor a perfect square on the left side:
(x + 8)(x + 8) = 7

Calculate the square root of the right side: 2.645751311

Break this problem into two subproblems by setting 
(x + 8) equal to 2.645751311 and -2.645751311.

Subproblem 1

x + 8 = 2.645751311 Simplifying x + 8 = 2.645751311 Reorder the terms: 8 + x = 2.645751311 Solving 8 + x = 2.645751311 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 = 2.645751311 + -8 Combine like terms: 8 + -8 = 0 0 + x = 2.645751311 + -8 x = 2.645751311 + -8 Combine like terms: 2.645751311 + -8 = -5.354248689 x = -5.354248689 Simplifying x = -5.354248689

Subproblem 2

x + 8 = -2.645751311 Simplifying x + 8 = -2.645751311 Reorder the terms: 8 + x = -2.645751311 Solving 8 + x = -2.645751311 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 = -2.645751311 + -8 Combine like terms: 8 + -8 = 0 0 + x = -2.645751311 + -8 x = -2.645751311 + -8 Combine like terms: -2.645751311 + -8 = -10.645751311 x = -10.645751311 Simplifying x = -10.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.354248689, -10.645751311}

See similar equations:

| 14+(2q+5)=-2q+9 | | y^2-4y+4=0 | | 2x+8x-2=-3(3-x) | | (s+7)(s-18)=0 | | 4n-5(n+2)=14 | | 6x^2+9=-55 | | 9x+14=6x-11 | | s^2-3s-40=0 | | 3n^2-32n+64=0 | | -5(-n-2)=-3n-54 | | 3s^2+10s+8= | | X(2+5)=100 | | -6x+24-45=1-34 | | 100x^2-5=0 | | X(2+5x)=100 | | 2(s-4)-7=-19 | | 16x-7+4x=6(4x-2)+3 | | 7x+10=4x-5 | | -3(x+1)=7 | | 15-2(z-3)=5z | | 0.2(x+3)-0.5(x+3)=-0.3x-0.9 | | 5x-6=34 | | x^2+8x+16=20 | | -5(5x+9)-5(3-x)+12(2x+4)=0 | | -5a+3=-3a+6 | | -2(x+5)=-26 | | -5+5x+6=6(x+2)-9 | | -4x-8x=-60 | | 6-(3x-2)=4(x+4)+6 | | 14x-8x=-60 | | 28d+22d+15d=300 | | x^2-6x+9=32 |

Equations solver categories