Question

7.simplify the following using identites: a) 1.25×1.25-1.2-1.2/2.45

Answer 1

hey mate ur answer is
0.127

Answer 2

$\frac{1.25 \times 1.25 - 1.2 \times 1.2}{2.45} \\ = \frac{ {1.25}^{2} - {1.2}^{2} }{2.45} \\ = \frac{(1.25 + 1.2)(1.25 - 1.2)}{2.45} \\ = \frac{(2.45)(0.05)}{2.45} \\ = 0.05$