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Which expression is equivalent to $2x + 2x$ ? $\newline$ Choices: $\newline$ (A) $x^4$ $\newline$ (B) $4x$ $\newline$ (C) $3x$ $\newline$ (D) $x + 4$

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Evaluate rational exponents

Full solution

Q. Which expression is equivalent to

2x + 2x

?

\newline

Choices:

\newline

(A)

x^4

\newline

(B)

4x

\newline

(C)

3x

\newline

(D)

x + 4

Identify Like Terms: Identify the like terms in the expression $2x + 2x$ . Both terms are $2x$ , which are like terms because they have the same variable part.
Combine Like Terms: Combine the like terms by adding their coefficients. $2x + 2x = (2 + 2)x = 4x$
Check Answer Choices: Check the answer choices to see which one matches the simplified expression. $\newline$ The correct choice that matches $4x$ is (B) $4x$ .

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