MCQ
$(x-1)(x+2)$ is equal to
- A$2 x+3$
- B$x^2+2 x+2$
- ✓$x^2+3 x+2$
- D$x^2+2 x+3$
✓
Answer
Correct option: C.
$x^2+3 x+2$
$(x+1)(x+2)$
$=x^2+(1+2) x+1 \times 2$
$=x^2+3 x+2$
$=x^2+(1+2) x+1 \times 2$
$=x^2+3 x+2$
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