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4x^2+4x+1=9 solutions

User Gary Makin
by
4.8k points

1 Answer

4 votes

Answer:

x = - 2, x = 1

Explanation:

Given

4x² + 4x + 1 = 9 ( subtract 9 from both sides )

4x² + 4x - 8 = 0 ← in standard form

Divide through by 4

x² + x - 2 = 0

(x + 2)(x - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

x - 1 = 0 ⇒ x = 1

User Starkey
by
4.7k points
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