x(x-9)=-36

Simple and best practice solution for x(x-9)=-36 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(x-9)=-36 equation:


Simplifying
x(x + -9) = -36

Reorder the terms:
x(-9 + x) = -36
(-9 * x + x * x) = -36
(-9x + x2) = -36

Solving
-9x + x2 = -36

Solving for variable 'x'.

Reorder the terms:
36 + -9x + x2 = -36 + 36

Combine like terms: -36 + 36 = 0
36 + -9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -9x + -36 + x2 = 0 + -36

Reorder the terms:
36 + -36 + -9x + x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -9x + x2 = 0 + -36
-9x + x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-9x + x2 = -36

The x term is -9x.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9x + 20.25 + x2 = -36 + 20.25

Reorder the terms:
20.25 + -9x + x2 = -36 + 20.25

Combine like terms: -36 + 20.25 = -15.75
20.25 + -9x + x2 = -15.75

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = -15.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 9x(3x+-5)+2(4y+2y)= | | J-1/2=(-3/4) | | 4x+5=3y | | 35x^2-82x+48= | | J-1/2=(3/4) | | 49-7x=23 | | 3(y^2+3y-90)= | | 13-4.5y=7.4-1y | | y^2+3y-90= | | 36x^2-55x+25=646 | | 93/180 | | 0.10d+0.05(2d-1)=0.55 | | 5x+(-1)=6x+5 | | [[12x]/[10ax]] ext;[÷][[3x]/[4a]] | | p-0.20p=12.60 | | 6x+7=4x-11 | | sqrt(11x/(10y^11)) | | 5+8x=20+x | | X=-12-2x | | 6+30x=5+30x | | 4x^2+100x+600=0 | | w^2+4w-20= | | 6x-8y+9x+4y= | | 5(w^2-20)= | | 3(3x+7)-30=5x-4+3x | | x+(x*.085)=205.23 | | (5v-7)(8-v)= | | -10(v+2)=70 | | 5(2x-3)=3(3x-2) | | 5y=3(8+2)whatisy | | (X)/7=5 | | cosinex=6.25 |

Equations solver categories