(30a^2)-93a-42=0

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Solution for (30a^2)-93a-42=0 equation:


Simplifying
(30a2) + -93a + -42 = 0

Reorder the terms:
-42 + -93a + (30a2) = 0

Solving
-42 + -93a + (30a2) = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-14 + -31a + (10a2)) = 0

Factor a trinomial.
3((-2 + -5a)(7 + -2a)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-2 + -5a)' equal to zero and attempt to solve: Simplifying -2 + -5a = 0 Solving -2 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -5a = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -5a = 0 + 2 -5a = 0 + 2 Combine like terms: 0 + 2 = 2 -5a = 2 Divide each side by '-5'. a = -0.4 Simplifying a = -0.4

Subproblem 2

Set the factor '(7 + -2a)' equal to zero and attempt to solve: Simplifying 7 + -2a = 0 Solving 7 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2a = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2a = 0 + -7 -2a = 0 + -7 Combine like terms: 0 + -7 = -7 -2a = -7 Divide each side by '-2'. a = 3.5 Simplifying a = 3.5

Solution

a = {-0.4, 3.5}

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