Question

Evaluate using identities b) 89²

Answer 1

Answer:

7921

Step-by-step explanation:

89²

= (90-1)²

= (90)²-2(90)(1)+(1)²

= 8100-180+1

= 7921

Answer 2

Step-by-step explanation:

this is the answer plzzzzzz mark me as brain guest