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Types of Expressions Based on the Number of Terms

Which of the ...

Question

Which of the following is a monomial in one variable?

A

6x+2y-6x-2y

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B

7x

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C

\frac{9 x}{x}

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D

5

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Solution

The correct option is B 7x
A monomial is an expression which has only one term
Here, 6x+2y-6x-2y becomes 0 after simplifying, which is a constant.
also $\frac{9 x}{x}$ = 9, which is also a constant.
$∴$ 7x is a monomial with only one variable.

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