Question

evaluate 8.1 Square by using identity 1​

Answer 1

Explanation:

${(8 .1)}^{2} = {(8 + 0.1)}^{2}$

hence by the identity 1,

(a+b)²=a²+b²+2ab,

${(8.1)}^{2} = \:64 + 0.01 + 0.8$

$64 + 0.81$

hence answer is 64.81

Answer 2

Answer:

Hey mate look at the attachment.... plzz...