Question

(B) using Identities Evaluate the following
51sq - 49sq​

Answer 1

Answer:

2sq no identity can be applied.

Step-by-step explanation:

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Answer 2

Answer: 100× 2 = 200

Step-by-step explanation:

⇒(51)² - (49)²

⇒(51+49) (51-49)                    As we know that a² -b² = (a+b ) (a-b)  

⇒100× 2 = 200