(x-8)(x+15)=0

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Solution for (x-8)(x+15)=0 equation:


Simplifying
(x + -8)(x + 15) = 0

Reorder the terms:
(-8 + x)(x + 15) = 0

Reorder the terms:
(-8 + x)(15 + x) = 0

Multiply (-8 + x) * (15 + x)
(-8(15 + x) + x(15 + x)) = 0
((15 * -8 + x * -8) + x(15 + x)) = 0
((-120 + -8x) + x(15 + x)) = 0
(-120 + -8x + (15 * x + x * x)) = 0
(-120 + -8x + (15x + x2)) = 0

Combine like terms: -8x + 15x = 7x
(-120 + 7x + x2) = 0

Solving
-120 + 7x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-15 + -1x)(8 + -1x) = 0

Subproblem 1

Set the factor '(-15 + -1x)' equal to zero and attempt to solve: Simplifying -15 + -1x = 0 Solving -15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -1x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -1x = 0 + 15 -1x = 0 + 15 Combine like terms: 0 + 15 = 15 -1x = 15 Divide each side by '-1'. x = -15 Simplifying x = -15

Subproblem 2

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Solution

x = {-15, 8}

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