=9a^2+12a+4

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Solution for =9a^2+12a+4 equation:


Simplifying
0 = 9a2 + 12a + 4

Reorder the terms:
0 = 4 + 12a + 9a2

Solving
0 = 4 + 12a + 9a2

Solving for variable 'a'.

Combine like terms: 0 + -4 = -4
-4 + -12a + -9a2 = 4 + 12a + 9a2 + -4 + -12a + -9a2

Reorder the terms:
-4 + -12a + -9a2 = 4 + -4 + 12a + -12a + 9a2 + -9a2

Combine like terms: 4 + -4 = 0
-4 + -12a + -9a2 = 0 + 12a + -12a + 9a2 + -9a2
-4 + -12a + -9a2 = 12a + -12a + 9a2 + -9a2

Combine like terms: 12a + -12a = 0
-4 + -12a + -9a2 = 0 + 9a2 + -9a2
-4 + -12a + -9a2 = 9a2 + -9a2

Combine like terms: 9a2 + -9a2 = 0
-4 + -12a + -9a2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(4 + 12a + 9a2) = 0

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

Ignore the factor -1.

Subproblem 1

Set the factor '(2 + 3a)' equal to zero and attempt to solve: Simplifying 2 + 3a = 0 Solving 2 + 3a = 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 + 3a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3a = 0 + -2 3a = 0 + -2 Combine like terms: 0 + -2 = -2 3a = -2 Divide each side by '3'. a = -0.6666666667 Simplifying a = -0.6666666667

Subproblem 2

Set the factor '(2 + 3a)' equal to zero and attempt to solve: Simplifying 2 + 3a = 0 Solving 2 + 3a = 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 + 3a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3a = 0 + -2 3a = 0 + -2 Combine like terms: 0 + -2 = -2 3a = -2 Divide each side by '3'. a = -0.6666666667 Simplifying a = -0.6666666667

Solution

a = {-0.6666666667, -0.6666666667}

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