SOLUTION: How do i solve 4a squared -12a-16??????

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Question 718033: How do i solve 4a squared -12a-16??????
Answer by algebrahouse.com(1659) About Me  (Show Source):
You can put this solution on YOUR website!
4aČ - 12a - 16 = 0 {I assume you meant equal to 0}
4(aČ - 3a - 4) = 0 {factored 4 out}
4(a - 4)(a + 1) = 0 {factored into two binomials}
a - 4 = 0 or a + 1 = 0 {set each factor equal to 0, excluding the 4}
a = 4 or a = -1 {solved each equation for a}

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