Question

How do you multiply (√5−√2)(√5+√2)?

Answer 1

By a identity

(a+b)(a-b)

=a^2-b^2

=(√5)^2-(√2)^2

=5-2

=3

Answer 2

Answer:

3

Step-by-step explanation:

We know about the identity:

(a+b)(a-b)=a²-b²

So, here we apply the above identity:

(√5-√2)(√5+√2)

=(√5)²-(√2)²

=5-2

=3