Question

a-b=0.9and a+b=1.find a2 -b2​

Answer 1

=>(a+b)(a-b) = (a²-b²)

=>0.9 × 1

=> 0.9

MARK It As BRAINLIST answer ❤️

Answer 2

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

0.9*1=0.9answer