Question

simplify (4 root 5 minus 3 root 2)
(4 root 5 + 3 root 2)

Answer 1

(4√5-3√2)(4√5+3√2)

(4√5)^2-(3√2)^2 ...by identity (a+b)(a-b) =a^2-b^2

80-18

62