MCQ
Mark $(\checkmark)$ against the correct answer: $3 + 23x - 8x^2 =\ ?$
- A$(1 - 8x)(3 + x)$
- ✓$(1 + 8x)(3 - x)$
- C$(1 - 8x)(3 - x)$
- DNone of these
✓
Answer
Correct option: B.
$(1 + 8x)(3 - x)$
B
Solution:
$(1 + 8x)(3 - x)$
$3 + 23x - 8x^2$
$= 3 + 24x - x - 8x^2$
$= 3(1 + 8x)-x(1 + 8x)$
$= (1 + 8x)(3 - x)$
Solution:
$(1 + 8x)(3 - x)$
$3 + 23x - 8x^2$
$= 3 + 24x - x - 8x^2$
$= 3(1 + 8x)-x(1 + 8x)$
$= (1 + 8x)(3 - x)$
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