Question

find the square without actual multiplication 71 ​

Answer 1

Answer:

(a+b)2=a2+2ab+b2

⇒(70+1)2=(70)2+2(70)(1)+(1)2

=4900+140+1

=5041

Step-by-step explanation:

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Answer 2

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71² = 71 × 71 = 5041