Question

6. Using identities, evaluate.
(i) 712
(ii) 992
(1) 1022​

Answer 1

Answer:

your question Ans is : 5041

Step-by-step explanation:

712

= (70+1)2

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

putting a=70 & b =1

=(70)2 + ( 1 )2 + 2(70) ( 1 )

=4900+1+140

5041

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