4a^2+15-18a+5=

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Solution for 4a^2+15-18a+5= equation:


Simplifying
4a2 + 15 + -18a + 5 = 0

Reorder the terms:
15 + 5 + -18a + 4a2 = 0

Combine like terms: 15 + 5 = 20
20 + -18a + 4a2 = 0

Solving
20 + -18a + 4a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2'.
2(10 + -9a + 2a2) = 0

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

Ignore the factor 2.

Subproblem 1

Set the factor '(2 + -1a)' equal to zero and attempt to solve: Simplifying 2 + -1a = 0 Solving 2 + -1a = 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 + -1a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1a = 0 + -2 -1a = 0 + -2 Combine like terms: 0 + -2 = -2 -1a = -2 Divide each side by '-1'. a = 2 Simplifying a = 2

Subproblem 2

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

Solution

a = {2, 2.5}

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