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Question

Coefficient of x in -9xy2z is


A

9yz

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B

-9yz

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C

9y2z

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D

-9y2z

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Solution

The correct option is D

-9y2z


The correct option is D.

The explanation for the correct option:

The multiplicative factor in a term of an algebraic expression or polynomial is called the “coefficient”.

A coefficient is generally a constant, but maybe a variable or an expression also.

For example: In the polynomial 7x2-2ax+3, the coefficient of x2 is 7, the coefficient of x is -2a and 3 is the constant coefficient.

The given expression -9xy2z can be written as -9y2zx.

Here the multiplicative factor of x is -9y2z.

Therefore, the coefficient of x in -9xy2z is -9y2z.

Hence, the correct option is (D).


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