5a^2-9a-45a+81=

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Solution for 5a^2-9a-45a+81= equation:


Simplifying
5a2 + -9a + -45a + 81 = 0

Reorder the terms:
81 + -9a + -45a + 5a2 = 0

Combine like terms: -9a + -45a = -54a
81 + -54a + 5a2 = 0

Solving
81 + -54a + 5a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(9 + -5a)(9 + -1a) = 0

Subproblem 1

Set the factor '(9 + -5a)' equal to zero and attempt to solve: Simplifying 9 + -5a = 0 Solving 9 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -5a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5a = 0 + -9 -5a = 0 + -9 Combine like terms: 0 + -9 = -9 -5a = -9 Divide each side by '-5'. a = 1.8 Simplifying a = 1.8

Subproblem 2

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Solution

a = {1.8, 9}

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