(12+x)(16+x)=285

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Solution for (12+x)(16+x)=285 equation:


Simplifying
(12 + x)(16 + x) = 285

Multiply (12 + x) * (16 + x)
(12(16 + x) + x(16 + x)) = 285
((16 * 12 + x * 12) + x(16 + x)) = 285
((192 + 12x) + x(16 + x)) = 285
(192 + 12x + (16 * x + x * x)) = 285
(192 + 12x + (16x + x2)) = 285

Combine like terms: 12x + 16x = 28x
(192 + 28x + x2) = 285

Solving
192 + 28x + x2 = 285

Solving for variable 'x'.

Reorder the terms:
192 + -285 + 28x + x2 = 285 + -285

Combine like terms: 192 + -285 = -93
-93 + 28x + x2 = 285 + -285

Combine like terms: 285 + -285 = 0
-93 + 28x + x2 = 0

Factor a trinomial.
(-31 + -1x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-31 + -1x)' equal to zero and attempt to solve: Simplifying -31 + -1x = 0 Solving -31 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '31' to each side of the equation. -31 + 31 + -1x = 0 + 31 Combine like terms: -31 + 31 = 0 0 + -1x = 0 + 31 -1x = 0 + 31 Combine like terms: 0 + 31 = 31 -1x = 31 Divide each side by '-1'. x = -31 Simplifying x = -31

Subproblem 2

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

Solution

x = {-31, 3}

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