(x^2-5x)=(9x-12)

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


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

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

Remove parenthesis around (-5x + x2)
-5x + x2 = (9x + -12)

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

Remove parenthesis around (-12 + 9x)
-5x + x2 = -12 + 9x

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

Solving for variable 'x'.

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

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

Reorder the terms:
12 + -14x + x2 = -12 + 12 + 9x + -9x

Combine like terms: -12 + 12 = 0
12 + -14x + x2 = 0 + 9x + -9x
12 + -14x + x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
12 + -14x + x2 = 0

Begin completing the square.

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:

| 12x-5=3b | | 25=a-[-3] | | 117-3x=24x+15 | | r-7=13 | | p+-2=9 | | 8(X-5)=4(x+19) | | ln(4x^2-12x+9)=0 | | x-(-6)=-5 | | 3(6x-10)+16=40 | | 9x^2+y^2-54x+4y+49=0 | | 9x+9=9+3 | | 6+y-4=3 | | 3(x-2)=66-5x | | b^2-10b-26=-2 | | 5(4a-7)=25 | | x^2-16x+37=9 | | v^2+14v-87=8 | | -y+7-8=-5 | | m^2-8m-63=-10 | | 3x+15=4x-10 | | x^2-20x-63=6 | | x^2-10x-64=-8 | | x*(x+1)*(x+2)=999900 | | 3cosx+1=cosx-1 | | y-7-8=13 | | x^2+4x-20=-8 | | 3x+14+9x+14=90 | | -70=8x+16+5+5x | | k^2+k-11=0 | | n^2+4n-60=4 | | n^2+4n-60=40 | | p^2-12p-66=8 |

Equations solver categories