Algebramedium · Past Paper
Expand (2x - 3)^2.
A4x^2 - 9
B4x^2 + 9
C4x^2 - 12x + 9
D4x^2 - 6x + 9
✓ Correct Answer: C — 4x^2 - 12x + 9
(a-b)^2 = a^2 - 2ab + b^2. (2x)^2 - 2(2x)(3) + 3^2 = 4x^2 - 12x + 9.
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✓ Correct Answer: C — 4x^2 - 12x + 9
(a-b)^2 = a^2 - 2ab + b^2. (2x)^2 - 2(2x)(3) + 3^2 = 4x^2 - 12x + 9.
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