Question

What is the value of the rational expression below when x is equal to 4? 12+x/4+x
A. 8
B. 4
C. 2
D. 3

Answer 1

12+4=16
4+4=8
16/8=2

C!

Answer 2

The value of the rational expression below when x is equal to 4 is option (C) 2 is the correct answer.

What is a rational expression?

A rational expression is the ratio of two polynomials. It looks like fractions that have variables in their denominators. A rational expression is considered simplified if there are no common factors in its numerator and denominator.

For the given situation,

The rational expression is $\frac{12+x}{4+x}$

On substituting x = 4,

⇒ $\frac{12+x}{4+x}=\frac{12+4}{4+4}$

⇒ $\frac{16}{8}$

⇒ $2$

Hence we can conclude that the value of the rational expression below when x is equal to 4 is option (C) 2 is the correct answer.

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