Question

simplify the expression : (5 −√ 2) (5 +√2 )

Answer 1

post simplification :answer is 23

Answer 2

Step-by-step explanation:

(5 −√ 2) (5 +√2)

We know that (a+b)(a−b)=a ^2 −b ^2

=(5 +√2 )(5 −√ 2)

=(5 )^2-(√ 2)^2

=25-2

=23