Question

The value of 7. 87 * 7. 87- 1. 72 * 1.72/6. 15 is

Answer 1

dear student

$$\begin{gathered} givenexpression \\ =\frac{7.{87}^2-1.{72}^2}{6.15} \\ =\frac{(7.87+1.72)(7.87-1.72)}{6.15} \\ =\frac{(9.59)(6.15)}{6.15} \\ =9.59 \end{gathered}$$