4(x+5)(x+9)=0

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Solution for 4(x+5)(x+9)=0 equation:


Simplifying
4(x + 5)(x + 9) = 0

Reorder the terms:
4(5 + x)(x + 9) = 0

Reorder the terms:
4(5 + x)(9 + x) = 0

Multiply (5 + x) * (9 + x)
4(5(9 + x) + x(9 + x)) = 0
4((9 * 5 + x * 5) + x(9 + x)) = 0
4((45 + 5x) + x(9 + x)) = 0
4(45 + 5x + (9 * x + x * x)) = 0
4(45 + 5x + (9x + x2)) = 0

Combine like terms: 5x + 9x = 14x
4(45 + 14x + x2) = 0
(45 * 4 + 14x * 4 + x2 * 4) = 0
(180 + 56x + 4x2) = 0

Solving
180 + 56x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(45 + 14x + x2) = 0

Factor a trinomial.
4((9 + x)(5 + x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 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 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {-9, -5}

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