Question

(1.2a-2.2b)^2 -( 1.2a+2.2b)^2
plsss say the correct answer​

Answer 1

Answer:

(1.2a-2.2b)^2 -( 1.2a+2.2b)^2 = -10.56ab

Step-by-step explanation:

(1.2a-2.2b)^2 -( 1.2a+2.2b)^2

= (1.2a)^2 + (2.2b)^2 - 2×1.2a×2.2b - [ (1.2a)^2 + (2.2b)^2 + 2×1.2a×1.2b

=1.44a^2 +4.84b^2 - 5.28ab - [ 1.44a^2 + 4.84b^2 + 5.28ab]

=1.44a^2 +4.84b^2 - 5.28ab - 1.44a^2 - 4.84b^2 - 5.28ab

= 1.44a^2 - 1.44a^2 + 4.84b^2 - 4.84b^2 - 5.28ab - 5.28ab

= - 5.28ab - 5.28ab

= - 10.56ab

I hope this answer is helpful for you