find the product by using suitable identity (9.9)²
Answers
Answered by
2
Step-by-step explanation:
=(10 - 0.1) using (a-b)^2 = a^2+b^2 -2ab
=100 + 0.01 - 2 x 10 x 0.1
=100.01 - 2
=98.01
Similar questions