25a^2-40a=-16

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Solution for 25a^2-40a=-16 equation:


Simplifying
25a2 + -40a = -16

Reorder the terms:
-40a + 25a2 = -16

Solving
-40a + 25a2 = -16

Solving for variable 'a'.

Reorder the terms:
16 + -40a + 25a2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + -40a + 25a2 = 0

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

Subproblem 1

Set the factor '(4 + -5a)' equal to zero and attempt to solve: Simplifying 4 + -5a = 0 Solving 4 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -5a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -5a = 0 + -4 -5a = 0 + -4 Combine like terms: 0 + -4 = -4 -5a = -4 Divide each side by '-5'. a = 0.8 Simplifying a = 0.8

Subproblem 2

Set the factor '(4 + -5a)' equal to zero and attempt to solve: Simplifying 4 + -5a = 0 Solving 4 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -5a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -5a = 0 + -4 -5a = 0 + -4 Combine like terms: 0 + -4 = -4 -5a = -4 Divide each side by '-5'. a = 0.8 Simplifying a = 0.8

Solution

a = {0.8, 0.8}

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