(x+3)(x+2)=42

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Solution for (x+3)(x+2)=42 equation:


Simplifying
(x + 3)(x + 2) = 42

Reorder the terms:
(3 + x)(x + 2) = 42

Reorder the terms:
(3 + x)(2 + x) = 42

Multiply (3 + x) * (2 + x)
(3(2 + x) + x(2 + x)) = 42
((2 * 3 + x * 3) + x(2 + x)) = 42
((6 + 3x) + x(2 + x)) = 42
(6 + 3x + (2 * x + x * x)) = 42
(6 + 3x + (2x + x2)) = 42

Combine like terms: 3x + 2x = 5x
(6 + 5x + x2) = 42

Solving
6 + 5x + x2 = 42

Solving for variable 'x'.

Reorder the terms:
6 + -42 + 5x + x2 = 42 + -42

Combine like terms: 6 + -42 = -36
-36 + 5x + x2 = 42 + -42

Combine like terms: 42 + -42 = 0
-36 + 5x + x2 = 0

Factor a trinomial.
(-9 + -1x)(4 + -1x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-9, 4}

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