Question

(0.7a - 0.9b)^2
solve it step by step
right answer will be mark brainliest​

Answer 1

0.04

( 0.7 - 0.9 )^2

Here, a = 0.7 and b = 0.9

= (0.7)^2 - (2 × 0.7 × 0.9) + (0.9)^2

{ By the identity : (a-b)^2 = a^2 - 2ab + b^2 }.

= 0.49 - 1.26 + 0.81

{ Solving each of them separately }.

= 0.04.

Answer 2

Answer:

0.04 wl be yr final answer.

Step-by-step explanation:

Hope it helps:)