2x^2+19x+18=9

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Solution for 2x^2+19x+18=9 equation:


Simplifying
2x2 + 19x + 18 = 9

Reorder the terms:
18 + 19x + 2x2 = 9

Solving
18 + 19x + 2x2 = 9

Solving for variable 'x'.

Reorder the terms:
18 + -9 + 19x + 2x2 = 9 + -9

Combine like terms: 18 + -9 = 9
9 + 19x + 2x2 = 9 + -9

Combine like terms: 9 + -9 = 0
9 + 19x + 2x2 = 0

Factor a trinomial.
(9 + x)(1 + 2x) = 0

Subproblem 1

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5

Solution

x = {-9, -0.5}

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