Question

simplify (√10-7)(√10+7)​

Answer 1

Answer:

-39

Step-by-step explanation:

(√10-7)(√10+7)

=(√10)²- (7)² [ a²-b²=(a+b)(a-b)]

=10-49

=-39

Answer 2

Step-by-step explanation:

= (√10-7)(√10+7)

= (√10)²-(7)². (Since (a-b) (a+b)=a²-b²)

= √10*√10 - 7*7

=10-49

= -39