20a^2=-12a+8

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Solution for 20a^2=-12a+8 equation:


Simplifying
20a2 = -12a + 8

Reorder the terms:
20a2 = 8 + -12a

Solving
20a2 = 8 + -12a

Solving for variable 'a'.

Reorder the terms:
-8 + 12a + 20a2 = 8 + -12a + -8 + 12a

Reorder the terms:
-8 + 12a + 20a2 = 8 + -8 + -12a + 12a

Combine like terms: 8 + -8 = 0
-8 + 12a + 20a2 = 0 + -12a + 12a
-8 + 12a + 20a2 = -12a + 12a

Combine like terms: -12a + 12a = 0
-8 + 12a + 20a2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-2 + 3a + 5a2) = 0

Factor a trinomial.
4((-1 + -1a)(2 + -5a)) = 0

Ignore the factor 4.

Subproblem 1

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

Subproblem 2

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

Solution

a = {-1, 0.4}

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