Question

(4.29)²-(2.71)²/4.29-2.71

Answer 1

(4.29)² - (2.71)²÷ (4.29 - 2.71)
= (4.29 + 2.71) (4.29 - 2.71)÷(4.29 - 2.71)
= 7

Answer 2

we know that


${a}^{2} - {b }^{2} = (a + b)(a - b)$
so the answer is 7