Question

Choose the correct answer : ${49}^2-{48}^2$

• A. $49-48$
• B. $(49-48)(49+48)$
• C. $(49÷48)(49÷48)$
• D. $(49÷48)$

Answer 1

The correct option is B

$(49-48)(49+48)$

Question is in the form of $a^2-b^2$ which is equal to $(a-b)(a+b)$

So open the identity for ${49}^2-{48}^2$, which gives $(49-48)(49+48)$

Hence, option (B) is correct.