Question

(√7+√8) (√7-√8)
explain it​

Answer 1

Answer:

-1

Step-by-step explanation:

(root 7-root 8) (root7+root8)

=(root7)^2- (root8)^2

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

= 7 - 8 = -1

Answer 2

Answer:

(a+b)(a-b)=a²-b²

(√7+√8)(√7-√8)=(√7)²-(√8)²

=7-8=-1

so the answer is-1