2a^2+15=11a

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Solution for 2a^2+15=11a equation:


Simplifying
2a2 + 15 = 11a

Reorder the terms:
15 + 2a2 = 11a

Solving
15 + 2a2 = 11a

Solving for variable 'a'.

Reorder the terms:
15 + -11a + 2a2 = 11a + -11a

Combine like terms: 11a + -11a = 0
15 + -11a + 2a2 = 0

Factor a trinomial.
(5 + -2a)(3 + -1a) = 0

Subproblem 1

Set the factor '(5 + -2a)' equal to zero and attempt to solve: Simplifying 5 + -2a = 0 Solving 5 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2a = 0 + -5 -2a = 0 + -5 Combine like terms: 0 + -5 = -5 -2a = -5 Divide each side by '-2'. a = 2.5 Simplifying a = 2.5

Subproblem 2

Set the factor '(3 + -1a)' equal to zero and attempt to solve: Simplifying 3 + -1a = 0 Solving 3 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1a = 0 + -3 -1a = 0 + -3 Combine like terms: 0 + -3 = -3 -1a = -3 Divide each side by '-1'. a = 3 Simplifying a = 3

Solution

a = {2.5, 3}

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