Question

Evaluate using identity (69.5)^2-(30.5)^2

Answer 1

Answer:

3270

Step-by-step explanation:

Question :-

(69.5)²-(30.5)²

Identity used :-

a²-b²=

(a+b)(a-b)

Solution :-

=(69.5)²-(30.5)²

=(69.5-39.5)(69.5+39.5)

=30×109

=3270

Thank you