(x-2)(x+3)=84

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Solution for (x-2)(x+3)=84 equation:


Simplifying
(x + -2)(x + 3) = 84

Reorder the terms:
(-2 + x)(x + 3) = 84

Reorder the terms:
(-2 + x)(3 + x) = 84

Multiply (-2 + x) * (3 + x)
(-2(3 + x) + x(3 + x)) = 84
((3 * -2 + x * -2) + x(3 + x)) = 84
((-6 + -2x) + x(3 + x)) = 84
(-6 + -2x + (3 * x + x * x)) = 84
(-6 + -2x + (3x + x2)) = 84

Combine like terms: -2x + 3x = 1x
(-6 + 1x + x2) = 84

Solving
-6 + 1x + x2 = 84

Solving for variable 'x'.

Reorder the terms:
-6 + -84 + 1x + x2 = 84 + -84

Combine like terms: -6 + -84 = -90
-90 + 1x + x2 = 84 + -84

Combine like terms: 84 + -84 = 0
-90 + 1x + x2 = 0

Factor a trinomial.
(-10 + -1x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-10, 9}

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