Factor completely: 2x³ - 8x.
Answer and explanation
Correct answer: A. 2x(x - 2)(x + 2)
- Step 1: Factor common monomial: 2x(x² - 4). Step 2. Factor difference of two squares: x² - 4 = (x - 2)(x + 2). Step 3. Complete factorization: 2x(x - 2)(x + 2). Answer: 2x(x - 2)(x + 2). Why not the others: 2x(x² - 4) is incomplete; the others are improperly grouped.
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