2x(x+7)+2=-18

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Solution for 2x(x+7)+2=-18 equation:


Simplifying
2x(x + 7) + 2 = -18

Reorder the terms:
2x(7 + x) + 2 = -18
(7 * 2x + x * 2x) + 2 = -18
(14x + 2x2) + 2 = -18

Reorder the terms:
2 + 14x + 2x2 = -18

Solving
2 + 14x + 2x2 = -18

Solving for variable 'x'.

Reorder the terms:
2 + 18 + 14x + 2x2 = -18 + 18

Combine like terms: 2 + 18 = 20
20 + 14x + 2x2 = -18 + 18

Combine like terms: -18 + 18 = 0
20 + 14x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(10 + 7x + x2) = 0

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

Ignore the factor 2.

Subproblem 1

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

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 = {-5, -2}

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