9x-12=x^2-5x

Simple and best practice solution for 9x-12=x^2-5x 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 9x-12=x^2-5x equation:


Simplifying
9x + -12 = x2 + -5x

Reorder the terms:
-12 + 9x = x2 + -5x

Reorder the terms:
-12 + 9x = -5x + x2

Solving
-12 + 9x = -5x + x2

Solving for variable 'x'.

Combine like terms: 9x + 5x = 14x
-12 + 14x + -1x2 = -5x + x2 + 5x + -1x2

Reorder the terms:
-12 + 14x + -1x2 = -5x + 5x + x2 + -1x2

Combine like terms: -5x + 5x = 0
-12 + 14x + -1x2 = 0 + x2 + -1x2
-12 + 14x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-12 + 14x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
12 + -14x + x2 = 0

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -14x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -14x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -14x + x2 = 0 + -12
-14x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-14x + x2 = -12

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -12 + 49

Reorder the terms:
49 + -14x + x2 = -12 + 49

Combine like terms: -12 + 49 = 37
49 + -14x + x2 = 37

Factor a perfect square on the left side:
(x + -7)(x + -7) = 37

Calculate the square root of the right side: 6.08276253

Break this problem into two subproblems by setting 
(x + -7) equal to 6.08276253 and -6.08276253.

Subproblem 1

x + -7 = 6.08276253 Simplifying x + -7 = 6.08276253 Reorder the terms: -7 + x = 6.08276253 Solving -7 + x = 6.08276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 6.08276253 + 7 Combine like terms: -7 + 7 = 0 0 + x = 6.08276253 + 7 x = 6.08276253 + 7 Combine like terms: 6.08276253 + 7 = 13.08276253 x = 13.08276253 Simplifying x = 13.08276253

Subproblem 2

x + -7 = -6.08276253 Simplifying x + -7 = -6.08276253 Reorder the terms: -7 + x = -6.08276253 Solving -7 + x = -6.08276253 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -6.08276253 + 7 Combine like terms: -7 + 7 = 0 0 + x = -6.08276253 + 7 x = -6.08276253 + 7 Combine like terms: -6.08276253 + 7 = 0.91723747 x = 0.91723747 Simplifying x = 0.91723747

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.08276253, 0.91723747}

See similar equations:

| cos2/3x=-1 | | 0.41666667*36= | | -4x-101=39-11x | | t=135.29+0.38m(190) | | 3a+22=43 | | 5x-2(-7x+2)=0 | | Y-11=8/5(x-2) | | 2a=3(a+3) | | cos(4x)=-.5 | | F(5)-5=4x^2+5x | | .03x+750=.07x+500 | | log(x)=-30 | | 9(2+v)+36v=13v | | 0.5y+5=25 | | 2y^2-x^2+xy=0 | | 4x+1+6x-41=180 | | -3x-2(4x-8)+x=0 | | 3/5x-3=2(1/4) | | 5x^2+40x+80=2x^2+4x+2-27 | | 6x=0y | | -5/3x-6=1/5x-3/5 | | 6x-41=90 | | 43+-3x=-240 | | x^2-4x-55=0 | | 2(-x+4)-7x-4=0 | | -7(-1-6x)=30+5x | | (y+9)(y-4)=0 | | -47-x=3x+13 | | -8x+16=32 | | 40-2y=24 | | z^2=4y^2 | | 3x^7-27x=0 |

Equations solver categories