Question

Using identity evaluate (1.02)² - (0.98)²

Answer 1

Please see the attachment

Answer 2

(1.02)^2 - (0.98)^2

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

a=1.02

b=0.98

(1.02+0.98)(1.02-0.98)

2×0.04

0.08