x^2-16x-36=100

Simple and best practice solution for x^2-16x-36=100 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-36=100 equation:


Simplifying
x2 + -16x + -36 = 100

Reorder the terms:
-36 + -16x + x2 = 100

Solving
-36 + -16x + x2 = 100

Solving for variable 'x'.

Reorder the terms:
-36 + -100 + -16x + x2 = 100 + -100

Combine like terms: -36 + -100 = -136
-136 + -16x + x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-136 + -16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '136' to each side of the equation.
-136 + -16x + 136 + x2 = 0 + 136

Reorder the terms:
-136 + 136 + -16x + x2 = 0 + 136

Combine like terms: -136 + 136 = 0
0 + -16x + x2 = 0 + 136
-16x + x2 = 0 + 136

Combine like terms: 0 + 136 = 136
-16x + x2 = 136

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 = 136 + 64

Reorder the terms:
64 + -16x + x2 = 136 + 64

Combine like terms: 136 + 64 = 200
64 + -16x + x2 = 200

Factor a perfect square on the left side:
(x + -8)(x + -8) = 200

Calculate the square root of the right side: 14.142135624

Break this problem into two subproblems by setting 
(x + -8) equal to 14.142135624 and -14.142135624.

Subproblem 1

x + -8 = 14.142135624 Simplifying x + -8 = 14.142135624 Reorder the terms: -8 + x = 14.142135624 Solving -8 + x = 14.142135624 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 = 14.142135624 + 8 Combine like terms: -8 + 8 = 0 0 + x = 14.142135624 + 8 x = 14.142135624 + 8 Combine like terms: 14.142135624 + 8 = 22.142135624 x = 22.142135624 Simplifying x = 22.142135624

Subproblem 2

x + -8 = -14.142135624 Simplifying x + -8 = -14.142135624 Reorder the terms: -8 + x = -14.142135624 Solving -8 + x = -14.142135624 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 = -14.142135624 + 8 Combine like terms: -8 + 8 = 0 0 + x = -14.142135624 + 8 x = -14.142135624 + 8 Combine like terms: -14.142135624 + 8 = -6.142135624 x = -6.142135624 Simplifying x = -6.142135624

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.142135624, -6.142135624}

See similar equations:

| x^4-5x^3+9x^2-7x+2=0 | | x^2-16x+64=36 | | -4(2y+8)=0 | | 2t^2-16t+3=0 | | (x-2)(x-1)=x^2+mx-3m-1 | | 28x=41x-16 | | 15xy(x+y)=0 | | 0=20x^2+4x-3 | | 2x(2x^2+9)=0 | | 5-2a=-13+a | | 2n-8n-6=3n-8n | | 4a+7=8a+7 | | 3(x+1.74)=2x | | -6v+7v=10-4v | | 14-6(3x+4)=9 | | n+2-7n=-16 | | 5-3x-(4x+6)=-(8x+11)-(3x-10) | | 4u^2+24u+27=0 | | 6+3x+8=17 | | 14x^2+13=41 | | 11m^2+2m=8 | | 3X^2+(3t+1)x+t=0 | | -7x+7=-119 | | 2x-6=3x+1-x-7 | | 26=-4+y | | -9+5r=76 | | x^2=10x-12 | | 2m^2+2m=10 | | 10x^2-33x+9=0 | | -5[8+5(-2+5)]+18= | | .4444(x+3)=h | | 20x^2+13x+2=0 |

Equations solver categories