Question Video: Evaluating Expressions with One Variable Mathematics

Evaluate 3 + 5^𝑥 if 𝑥 = 2.

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Video Transcript

Evaluate three plus five to the 𝑥 power if 𝑥 equals two.

In this case, we have the expression three plus five to the 𝑥 power. In order to evaluate this expression, we substitute the number two in for 𝑥 so that we have three plus five squared. Five squared is five times five, which is 25. We add three to 25 to get 28, which tells us that three plus five to the 𝑥 power is equal to 28 when 𝑥 equals two.

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