Find the zeroes of polynomial where p(x)=4x^2+12x+9
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p(x) = 4x² + 12x + 9
= (2x)² + 2×2x×3 + (3)²
= (2x+3)²
We got the factors as 2x+3 and 2x+3
2x+3 = 0
2x = -3
x = -3/2
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