(2a+9)(5a-6)=0

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Solution for (2a+9)(5a-6)=0 equation:


Simplifying
(2a + 9)(5a + -6) = 0

Reorder the terms:
(9 + 2a)(5a + -6) = 0

Reorder the terms:
(9 + 2a)(-6 + 5a) = 0

Multiply (9 + 2a) * (-6 + 5a)
(9(-6 + 5a) + 2a * (-6 + 5a)) = 0
((-6 * 9 + 5a * 9) + 2a * (-6 + 5a)) = 0
((-54 + 45a) + 2a * (-6 + 5a)) = 0
(-54 + 45a + (-6 * 2a + 5a * 2a)) = 0
(-54 + 45a + (-12a + 10a2)) = 0

Combine like terms: 45a + -12a = 33a
(-54 + 33a + 10a2) = 0

Solving
-54 + 33a + 10a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-9 + -2a)(6 + -5a) = 0

Subproblem 1

Set the factor '(-9 + -2a)' equal to zero and attempt to solve: Simplifying -9 + -2a = 0 Solving -9 + -2a = 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 + -2a = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2a = 0 + 9 -2a = 0 + 9 Combine like terms: 0 + 9 = 9 -2a = 9 Divide each side by '-2'. a = -4.5 Simplifying a = -4.5

Subproblem 2

Set the factor '(6 + -5a)' equal to zero and attempt to solve: Simplifying 6 + -5a = 0 Solving 6 + -5a = 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 + -5a = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -5a = 0 + -6 -5a = 0 + -6 Combine like terms: 0 + -6 = -6 -5a = -6 Divide each side by '-5'. a = 1.2 Simplifying a = 1.2

Solution

a = {-4.5, 1.2}

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