MCQ
The value of $7^{\frac{1}{2}}.8^{\frac{1}{2}}$ is:
- A$(28)^\frac{1}{2}$
- ✓$(56)^\frac{1}{2}$
- C$(14)^\frac{1}{2}$
- D$(42)^\frac{1}{2}$
✓
Answer
Correct option: B.
$(56)^\frac{1}{2}$
$(7)^{\frac{1}{2}}\times(8)^{\frac{1}{2}}=(7\times8)^{\frac{1}{2}}=(56)^{\frac{1}{2}}$
Hence, the correct answer is option $(b).$
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