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

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


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

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

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

Multiply (3 + x) * (5 + 3x)
(3(5 + 3x) + x(5 + 3x)) = 0
((5 * 3 + 3x * 3) + x(5 + 3x)) = 0
((15 + 9x) + x(5 + 3x)) = 0
(15 + 9x + (5 * x + 3x * x)) = 0
(15 + 9x + (5x + 3x2)) = 0

Combine like terms: 9x + 5x = 14x
(15 + 14x + 3x2) = 0

Solving
15 + 14x + 3x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + x)(5 + 3x) = 0

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(5 + 3x)' equal to zero and attempt to solve: Simplifying 5 + 3x = 0 Solving 5 + 3x = 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 + 3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3x = 0 + -5 3x = 0 + -5 Combine like terms: 0 + -5 = -5 3x = -5 Divide each side by '3'. x = -1.666666667 Simplifying x = -1.666666667

Solution

x = {-3, -1.666666667}

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