9a^2-6a+1=169

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Solution for 9a^2-6a+1=169 equation:


Simplifying
9a2 + -6a + 1 = 169

Reorder the terms:
1 + -6a + 9a2 = 169

Solving
1 + -6a + 9a2 = 169

Solving for variable 'a'.

Reorder the terms:
1 + -169 + -6a + 9a2 = 169 + -169

Combine like terms: 1 + -169 = -168
-168 + -6a + 9a2 = 169 + -169

Combine like terms: 169 + -169 = 0
-168 + -6a + 9a2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-56 + -2a + 3a2) = 0

Factor a trinomial.
3((-4 + -1a)(14 + -3a)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-4 + -1a)' equal to zero and attempt to solve: Simplifying -4 + -1a = 0 Solving -4 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1a = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1a = 0 + 4 -1a = 0 + 4 Combine like terms: 0 + 4 = 4 -1a = 4 Divide each side by '-1'. a = -4 Simplifying a = -4

Subproblem 2

Set the factor '(14 + -3a)' equal to zero and attempt to solve: Simplifying 14 + -3a = 0 Solving 14 + -3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + -3a = 0 + -14 Combine like terms: 14 + -14 = 0 0 + -3a = 0 + -14 -3a = 0 + -14 Combine like terms: 0 + -14 = -14 -3a = -14 Divide each side by '-3'. a = 4.666666667 Simplifying a = 4.666666667

Solution

a = {-4, 4.666666667}

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