Question

Evaluate (891) ² using (a-b) formula.​

Answer 1

Answer:

(1000-109)2

a2-2ab+b2

(1000)2-2(1000*109)+(109)2

1000000-218000+11881

1011881-218000

793881

hope it helps u!

Answer 2

(900-9)²=(900²-2*99*9+9²)

=810,000-2*900*9+81

=793,881

Mark me brainiliest