Math, asked by NyasaMishra, 11 months ago

EPPU
5) Using the identities, evaluate:
a) 7.1 x 7.2​

Answers

Answered by mickyiocl
8

Answer:(7+0.1)×(7+0.2)

=7^2+7 (0.1+ 0.2) +(0.1)(0.2)

=49+2.1+0.02

=51.12 (ans)

Step-by-step explanation:

Answered by muneshwaranisha
3

Answer:

(7+0.1)(7+0.2)

51.12 is the correct answer.

Step-by-step explanation:

  1. using identity

(x+a)(x+b)=x²+x(a+b)+ab

x=7

a=0.1

b=0.2

substitute these values in the equation

=7²+7(0.1+0.2)+0.1×0.2

=49+2.1+0.02

=51.12

I hope it was helpful

Similar questions