Question

Evaluate 40/2×root 10+ root 20+ root 40 - 2×root 5, when it is given that root 10= 3.162

Answer 1

Step-by-step explanation:

$\frac{40}{2 \sqrt{10} } + \sqrt{20} + \sqrt{40 } - 2 \sqrt{5} \\ \frac{20}{ \sqrt{10} } + \sqrt{20} - \sqrt{20} \\ 2 \sqrt{10}$

Ohh sorry +_/40 was there

So the Ans is

2_/10+_/40

2_/10+2_/10

4_/10