Question

(1.19²-0.09²) using identity (a-b)(a+b)​

Answer 1

Answer:

$we \: know \: \\ {x}^{2} - {y }^{2} = (x + y)(x - y) \\ so \: \: ( {1.19}^{2} - {0.09}^{2} ) \\ = (1.19 + 0.09)(1.19 - 0.09) \\ = (1.28)(1.10) \\ = 1.408$

Here it is. Hope it helps.

Answer 2

Answer:

a = 1.19 , b= 0.09

(1.19 - 0.09)(1.19+0.09)

1.408

answer :- 1.408