Question

5.2*5.2-2.4*2.4 /2.8*7. 6

Answer 1

$\frac{ {a}^{2} - {b}^{2} }{2.8 \times 7.6} \\ \frac{(a + b)(a - b)}{2.8 \times 7.6} \\ \frac{(5.2 + 2.4)(5.2 - 2.4)}{2.8 \times 7.6} \\ \frac{7.6 \times 2.8}{2.8 \times 7.6} \\ 1$