x^2-12x+45=100

Simple and best practice solution for x^2-12x+45=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^2-12x+45=100 equation:


Simplifying
x2 + -12x + 45 = 100

Reorder the terms:
45 + -12x + x2 = 100

Solving
45 + -12x + x2 = 100

Solving for variable 'x'.

Reorder the terms:
45 + -100 + -12x + x2 = 100 + -100

Combine like terms: 45 + -100 = -55
-55 + -12x + x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-55 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '55' to each side of the equation.
-55 + -12x + 55 + x2 = 0 + 55

Reorder the terms:
-55 + 55 + -12x + x2 = 0 + 55

Combine like terms: -55 + 55 = 0
0 + -12x + x2 = 0 + 55
-12x + x2 = 0 + 55

Combine like terms: 0 + 55 = 55
-12x + x2 = 55

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = 55 + 36

Reorder the terms:
36 + -12x + x2 = 55 + 36

Combine like terms: 55 + 36 = 91
36 + -12x + x2 = 91

Factor a perfect square on the left side:
(x + -6)(x + -6) = 91

Calculate the square root of the right side: 9.539392014

Break this problem into two subproblems by setting 
(x + -6) equal to 9.539392014 and -9.539392014.

Subproblem 1

x + -6 = 9.539392014 Simplifying x + -6 = 9.539392014 Reorder the terms: -6 + x = 9.539392014 Solving -6 + x = 9.539392014 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 9.539392014 + 6 Combine like terms: -6 + 6 = 0 0 + x = 9.539392014 + 6 x = 9.539392014 + 6 Combine like terms: 9.539392014 + 6 = 15.539392014 x = 15.539392014 Simplifying x = 15.539392014

Subproblem 2

x + -6 = -9.539392014 Simplifying x + -6 = -9.539392014 Reorder the terms: -6 + x = -9.539392014 Solving -6 + x = -9.539392014 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -9.539392014 + 6 Combine like terms: -6 + 6 = 0 0 + x = -9.539392014 + 6 x = -9.539392014 + 6 Combine like terms: -9.539392014 + 6 = -3.539392014 x = -3.539392014 Simplifying x = -3.539392014

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.539392014, -3.539392014}

See similar equations:

| 0=-3/4(6)+b | | 9x+11-2x=14-15x-16 | | -6(1+7k)+7(1-6k)=-2 | | (7b)2+8+(3b)2= | | 200=16+6d/13 | | 8y+1=-15 | | z^2-8=0 | | 9/p=p/p-2 | | x+21-3x-2x-5=-52 | | n/5+3=6 | | 9u^2-48uv+64v^2= | | 80-12x^2=0 | | 8y+1=15 | | 0=3/4(6)+b | | 8(x)=-96 | | 35y^2-120y-100=0 | | -29=4(2a-1)+2a | | 7x+9-5x=10-11x-12 | | -5/5 | | w-1/5+3=w+6/2 | | 2=1/4(0)+b | | 4x^2+30x-105=0 | | 1/5x=14 | | (1)/1+x^2 | | 2=-4(0)+b | | -54=-9h+3 | | 2x^3+5x^2-3x=03x^2 | | 54x+4=38 | | 1.2x-x=24 | | y/5+y/4=8/9 | | 0.2y+0.6=0.2-0.2y | | -6x=-50+4x |

Equations solver categories