MCQ
The factorisation of $x^2 + 8x + 16$ is:
- A$(x + 2)^2$
- ✓$(x + 4)^2$
- C$(x - 2)^2$
- D$(x - A)^2$
✓
Answer
Correct option: B.
$(x + 4)^2$
$= x^2 + 8x + 16$
$= (x)^2 + 2 (x) (4) + (4)^2$
$= (x + 4)^2$
$= (x)^2 + 2 (x) (4) + (4)^2$
$= (x + 4)^2$
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