Evaluate using identity (69.5)^2-(30.5)^2
Answers
Answered by
2
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
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