Question

solve :- (5-root 2) (5+root 2)
plz tell me answer step by step ​

Answer 1

Answer:

(5-√2)(5+√2)=23

Step-by-step explanation:

(5-√2)(5+√2)

Using the identity:-(a-b)(a+b)=a²-b²

a=5, b=√2

=(5)²-(√2)²

=25-2

=23