(3x+6)(5x+10)=0

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Solution for (3x+6)(5x+10)=0 equation:


Simplifying
(3x + 6)(5x + 10) = 0

Reorder the terms:
(6 + 3x)(5x + 10) = 0

Reorder the terms:
(6 + 3x)(10 + 5x) = 0

Multiply (6 + 3x) * (10 + 5x)
(6(10 + 5x) + 3x * (10 + 5x)) = 0
((10 * 6 + 5x * 6) + 3x * (10 + 5x)) = 0
((60 + 30x) + 3x * (10 + 5x)) = 0
(60 + 30x + (10 * 3x + 5x * 3x)) = 0
(60 + 30x + (30x + 15x2)) = 0

Combine like terms: 30x + 30x = 60x
(60 + 60x + 15x2) = 0

Solving
60 + 60x + 15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '15'.
15(4 + 4x + x2) = 0

Factor a trinomial.
15((2 + x)(2 + x)) = 0

Ignore the factor 15.

Subproblem 1

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {-2, -2}

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