Question

The value of $\frac{(64.328{)}^2-(35.672{)}^2}{28.656}=$

• A. 1
• B. 10
• C. 100
• D. 1000

Answer 1

The correct option is C

100

$\frac{(64.328{)}^2-(35.672{)}^2}{28.656}=\frac{\left(100\right)\times \left(28.656\right)}{\left(28.656\right)}(using{a}^2-b^2=(a+b\left)\right(a-b\left)\right)$
$=100$