MCQ
$(-2-\sqrt{3})(-2+\sqrt{3})$ when simplified is:
- APositive and irrational.
- BNegative and irrational.
- CNegative and rational.
- DPositive and rational.
✓
Answer
- Positive and rational.
Solution:
$(-2-\sqrt{3})(-2+\sqrt{3})$
$=(-2)^2-(\sqrt{3})^2$
$=4-3$
$=1$
Positive and rational
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