Question

(1.1x + 2.7y) (1.1X - 2.7y)​

Answer 1

Step-by-step explanation:

$we \: know \: that = > \\ (a + b)(a - b) = {a}^{2} - {b}^{2} \\ (1.1x + 2.7y)(1.1x - 2.7y) \\ 1.21 {x}^{2} - 7.29 {y}^{2}$