Expand and simplify (2x - 3)^2.
Answer and explanation
Correct answer: A. 4x^2 - 12x + 9
- Step 1: (2x - 3)^2 = (2x)^2 - 2(2x)(3) + 3^2. Step 2. = 4x^2 - 12x + 9. Answer: 4x^2 - 12x + 9. Why not the others: 4x^2 + 9: The middle term 2 x 2x x (-3) was left out. 4x^2 - 6x + 9: The middle term should be -12x. 2x^2 - 12x + 9: The first term (2x)^2 is 4x^2.
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