(2a^2)+9a=18

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Solution for (2a^2)+9a=18 equation:


Simplifying
(2a2) + 9a = 18

Reorder the terms:
9a + (2a2) = 18

Solving
9a + (2a2) = 18

Solving for variable 'a'.

Reorder the terms:
-18 + 9a + (2a2) = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 9a + (2a2) = 0

Factor a trinomial.
(-6 + -1a)(3 + -2a) = 0

Subproblem 1

Set the factor '(-6 + -1a)' equal to zero and attempt to solve: Simplifying -6 + -1a = 0 Solving -6 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1a = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1a = 0 + 6 -1a = 0 + 6 Combine like terms: 0 + 6 = 6 -1a = 6 Divide each side by '-1'. a = -6 Simplifying a = -6

Subproblem 2

Set the factor '(3 + -2a)' equal to zero and attempt to solve: Simplifying 3 + -2a = 0 Solving 3 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 0 + -3 -2a = 0 + -3 Combine like terms: 0 + -3 = -3 -2a = -3 Divide each side by '-2'. a = 1.5 Simplifying a = 1.5

Solution

a = {-6, 1.5}

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