Question

PLEASE ANSWER THIS QUESTION​

Answer 1

Answer:

1. 6² - 5²

using identity, a² - b² = (a+b)(a-b)

{6}^{2} - {5}^{2} = (6 + 5)(6 - 5)

= (11)(1)

=11

2. (3.1)²

using identity, (a+b)² = a² + 2ab + b²

{(3.1)}^{2} = {3}^{2} + 2(3)(0.1) +{0.1}^2

=9+0.6+0.01

=9.61