Question

There is a natural number$x$. Write down the expression for the product of $x$and its next natural number.

• A. (x + 1)(x+2)
• B. x² + x
• C. x² -x
• D. 2x² +1

Answer 1

The correct option is B

x² + x

If a natural number is $x$, the next natural number is greater than $x$by 1 and hence $x$+1. For eg. For 3, next natural number is 4. The product of the 2 numbers is $x$($x$+1) =$x^2$+ $x$