x(x-2)=15

Simple and best practice solution for x(x-2)=15 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-2)=15 equation:


Simplifying
x(x + -2) = 15

Reorder the terms:
x(-2 + x) = 15
(-2 * x + x * x) = 15
(-2x + x2) = 15

Solving
-2x + x2 = 15

Solving for variable 'x'.

Reorder the terms:
-15 + -2x + x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + -2x + x2 = 0

Factor a trinomial.
(-3 + -1x)(5 + -1x) = 0

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-3, 5}

See similar equations:

| 3x+8-x=2x | | 3r+4=38r+11 | | 2x-1.4=8x+4.2 | | 3(2x+1)=3 | | 14+16x=4(4x+4) | | 5x^2+2x=0 | | 3(f+2)=3(a+4) | | 6x-7=5x | | 3x^3-20x^2+12x=0 | | 5x+9=34 | | -(2x-3y+4z)= | | 2x^2-15x+7=0 | | 8(z-5)-40+12= | | 4x-9=-1-2(4-2x) | | 3x+5y=30 | | 7x-25=2x | | 2r+6=23r+9 | | 2x+3x=12-x | | 9x+11y=32 | | x^2-x-20=0 | | -11=x+9 | | -5y=20 | | x^3-10x^2+35=0 | | 4(a-2)=30 | | 25-x=8 | | 6(2x-2)=12 | | 5x-13=-3 | | 4p-6=20 | | 8x+5=6x+13 | | 5(8-a)-64=25a-6(4+5a) | | X+3y=5 | | 9x+7=5x-35 |

Equations solver categories