(x+7)(x+5)=3

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Solution for (x+7)(x+5)=3 equation:


Simplifying
(x + 7)(x + 5) = 3

Reorder the terms:
(7 + x)(x + 5) = 3

Reorder the terms:
(7 + x)(5 + x) = 3

Multiply (7 + x) * (5 + x)
(7(5 + x) + x(5 + x)) = 3
((5 * 7 + x * 7) + x(5 + x)) = 3
((35 + 7x) + x(5 + x)) = 3
(35 + 7x + (5 * x + x * x)) = 3
(35 + 7x + (5x + x2)) = 3

Combine like terms: 7x + 5x = 12x
(35 + 12x + x2) = 3

Solving
35 + 12x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
35 + -3 + 12x + x2 = 3 + -3

Combine like terms: 35 + -3 = 32
32 + 12x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
32 + 12x + x2 = 0

Factor a trinomial.
(8 + x)(4 + x) = 0

Subproblem 1

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 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 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

Subproblem 2

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Solution

x = {-8, -4}

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