(-x-3)(5x+2)=0

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Solution for (-x-3)(5x+2)=0 equation:


Simplifying
(-1x + -3)(5x + 2) = 0

Reorder the terms:
(-3 + -1x)(5x + 2) = 0

Reorder the terms:
(-3 + -1x)(2 + 5x) = 0

Multiply (-3 + -1x) * (2 + 5x)
(-3(2 + 5x) + -1x * (2 + 5x)) = 0
((2 * -3 + 5x * -3) + -1x * (2 + 5x)) = 0
((-6 + -15x) + -1x * (2 + 5x)) = 0
(-6 + -15x + (2 * -1x + 5x * -1x)) = 0
(-6 + -15x + (-2x + -5x2)) = 0

Combine like terms: -15x + -2x = -17x
(-6 + -17x + -5x2) = 0

Solving
-6 + -17x + -5x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(6 + 17x + 5x2) = 0

Factor a trinomial.
-1((3 + x)(2 + 5x)) = 0

Ignore the factor -1.

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 '(2 + 5x)' equal to zero and attempt to solve: Simplifying 2 + 5x = 0 Solving 2 + 5x = 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 + 5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5x = 0 + -2 5x = 0 + -2 Combine like terms: 0 + -2 = -2 5x = -2 Divide each side by '5'. x = -0.4 Simplifying x = -0.4

Solution

x = {-3, -0.4}

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