9a(a-3)=3a-25

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Solution for 9a(a-3)=3a-25 equation:


Simplifying
9a(a + -3) = 3a + -25

Reorder the terms:
9a(-3 + a) = 3a + -25
(-3 * 9a + a * 9a) = 3a + -25
(-27a + 9a2) = 3a + -25

Reorder the terms:
-27a + 9a2 = -25 + 3a

Solving
-27a + 9a2 = -25 + 3a

Solving for variable 'a'.

Reorder the terms:
25 + -27a + -3a + 9a2 = -25 + 3a + 25 + -3a

Combine like terms: -27a + -3a = -30a
25 + -30a + 9a2 = -25 + 3a + 25 + -3a

Reorder the terms:
25 + -30a + 9a2 = -25 + 25 + 3a + -3a

Combine like terms: -25 + 25 = 0
25 + -30a + 9a2 = 0 + 3a + -3a
25 + -30a + 9a2 = 3a + -3a

Combine like terms: 3a + -3a = 0
25 + -30a + 9a2 = 0

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

Subproblem 1

Set the factor '(5 + -3a)' equal to zero and attempt to solve: Simplifying 5 + -3a = 0 Solving 5 + -3a = 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 + -3a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3a = 0 + -5 -3a = 0 + -5 Combine like terms: 0 + -5 = -5 -3a = -5 Divide each side by '-3'. a = 1.666666667 Simplifying a = 1.666666667

Subproblem 2

Set the factor '(5 + -3a)' equal to zero and attempt to solve: Simplifying 5 + -3a = 0 Solving 5 + -3a = 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 + -3a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3a = 0 + -5 -3a = 0 + -5 Combine like terms: 0 + -5 = -5 -3a = -5 Divide each side by '-3'. a = 1.666666667 Simplifying a = 1.666666667

Solution

a = {1.666666667, 1.666666667}

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