Question

Using identities evaluate 71 Ka power 2​

Answer 1

Answer:

71²

Step-by-step explanation:

71= 100-29

Using Identity:

(a-b)²=a²+b²-2ab

(100-28)²= (100)²+(29)²- 2×100× 29

= 10000+ 841 - 5800

= 10841 - 5800

= 5041

(71)²= 5041

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Answer 2

convert convert 71 into the form of 70 + 1

and use identity a plus b ka whole square equal to a square + b square + 2ab

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