Simplify: (423×423-325×325)/(423-325)

Correct option is A

Given:

​$$\frac{423×423−325×325}{423−325}​$$

Formula used:

​$$a^2 −b^2 =(a−b)(a+b)$$

Solution:

Here, = 423 and = 325 So, the expression becomes:

= $$\frac{(423−325)(423+325)}{423−325}​$$

= $$\frac{98×(423+325)}{98}​$$

= 423 + 325

= 748

Thus, correct option is (a)