Expand and simplify (x + 2)(x - 5).
Answer and explanation
Correct answer: D. x squared - 3x - 10
- Step 1: (x + 2)(x - 5) = x squared - 5x + 2x - 10. Step 2. Collect the x terms: x squared - 3x - 10. Answer: x squared - 3x - 10. Why not the others: x squared + 3x - 10 has the wrong sign on the middle term, x squared - 7x - 10 subtracts 2x instead of adding it, and x squared - 10 leaves out the middle term.
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