2a(4a+13)=57

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Solution for 2a(4a+13)=57 equation:


Simplifying
2a(4a + 13) = 57

Reorder the terms:
2a(13 + 4a) = 57
(13 * 2a + 4a * 2a) = 57
(26a + 8a2) = 57

Solving
26a + 8a2 = 57

Solving for variable 'a'.

Reorder the terms:
-57 + 26a + 8a2 = 57 + -57

Combine like terms: 57 + -57 = 0
-57 + 26a + 8a2 = 0

Factor a trinomial.
(-19 + -4a)(3 + -2a) = 0

Subproblem 1

Set the factor '(-19 + -4a)' equal to zero and attempt to solve: Simplifying -19 + -4a = 0 Solving -19 + -4a = 0 Move all terms containing a to the left, all other terms to the right. Add '19' to each side of the equation. -19 + 19 + -4a = 0 + 19 Combine like terms: -19 + 19 = 0 0 + -4a = 0 + 19 -4a = 0 + 19 Combine like terms: 0 + 19 = 19 -4a = 19 Divide each side by '-4'. a = -4.75 Simplifying a = -4.75

Subproblem 2

Set the factor '(3 + -2a)' equal to zero and attempt to solve: Simplifying 3 + -2a = 0 Solving 3 + -2a = 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 + -2a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 0 + -3 -2a = 0 + -3 Combine like terms: 0 + -3 = -3 -2a = -3 Divide each side by '-2'. a = 1.5 Simplifying a = 1.5

Solution

a = {-4.75, 1.5}

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