Using suitable identities evaluate
:(12.5)2 – (7.5)2
Answers
Answered by
1
Step-by-step explanation:
(12.5)²-(7.5)²
= (12.5+7.5)(12.5-7.5) Using (a+b)(a-b) =a²-b²
= 20×5
=100
Answered by
1
Answer:
Step-by-step explanation:
= (12.5)² - (7.5)²
= (12.5 - 7.5) (12.5 + 7.5) [Using (a+b)(a-b) =a²- b²]
= 5 * 20
= 100
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