Question

✓[7+2✓10] what will be the answer of it?

Answer 1

Refer to the formula of √[(a + b) + 2√(a . b)] = √a + √b, then

✓[7+2✓10] = √[(2 + 5) + 2√(2 . 5)] 
✓[7+2✓10] = √2 + √5