(3a-11)(5a+9)=0

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Solution for (3a-11)(5a+9)=0 equation:


Simplifying
(3a + -11)(5a + 9) = 0

Reorder the terms:
(-11 + 3a)(5a + 9) = 0

Reorder the terms:
(-11 + 3a)(9 + 5a) = 0

Multiply (-11 + 3a) * (9 + 5a)
(-11(9 + 5a) + 3a * (9 + 5a)) = 0
((9 * -11 + 5a * -11) + 3a * (9 + 5a)) = 0
((-99 + -55a) + 3a * (9 + 5a)) = 0
(-99 + -55a + (9 * 3a + 5a * 3a)) = 0
(-99 + -55a + (27a + 15a2)) = 0

Combine like terms: -55a + 27a = -28a
(-99 + -28a + 15a2) = 0

Solving
-99 + -28a + 15a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-9 + -5a)(11 + -3a) = 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 '(11 + -3a)' equal to zero and attempt to solve: Simplifying 11 + -3a = 0 Solving 11 + -3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -3a = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -3a = 0 + -11 -3a = 0 + -11 Combine like terms: 0 + -11 = -11 -3a = -11 Divide each side by '-3'. a = 3.666666667 Simplifying a = 3.666666667

Solution

a = {-1.8, 3.666666667}

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