Given y = (2x + 3)^2, choose the standard form of the given quadratic equation.
0 = 25x^2
0 = 4x^2 + 9
0 = 4x^2 + 10x + 6
0 = 4x^2 + 12x + 9
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Step-by-step explanation:
(a+b) ²=a²+2ab+b²
(2x+3)²=2x²+2×2x×3+3²
=4x²+12x+9
hence, third equation is correct
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