Question

simplfy it fast please​

Answer 1

answer is in the attachment

Answer 2

Use formula (a+b)(a-b) = a^2-b^2

So, (4√5)^2 - (3√2)^2

So 4 × 4 × √5 × √5 = 16 × 5 = 80

and , 3 × 3 × √2 × √2 = 9 × 2 = 18

So, 80-18 = 62