5x^2+45x=-90

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Solution for 5x^2+45x=-90 equation:


Simplifying
5x2 + 45x = -90

Reorder the terms:
45x + 5x2 = -90

Solving
45x + 5x2 = -90

Solving for variable 'x'.

Reorder the terms:
90 + 45x + 5x2 = -90 + 90

Combine like terms: -90 + 90 = 0
90 + 45x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(18 + 9x + x2) = 0

Factor a trinomial.
5((6 + x)(3 + x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Subproblem 2

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

Solution

x = {-6, -3}

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