Question

using identities, evaluate
1) 102²
2) 5.2²​

Answer 1

Answer: 1) 10404

              2) 20

Step-by-step explanation:

1) (102)^2= (100+2)^2

(a+b)^2= a^2+2ab+ b^2

(100+2)^2= (100)^2+2(100)(2)+(2)^2

              = 10000+ 400+ 4

              = 10404.

2) 5.2^2

(5+0.2)^2

= (5)^2+2(5)(0.2)+(0.2)^2

= 25+ 2+0.04

=27.04

PS:- Bro if you want to write 5.2^2 then write (5.2)^2 otherwise it will seem as 5(2)^2

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Answer 2

Answer:

Hope it works..................................™✌️✌️