Advanced Math practice question

Answer: 3

2^(x + 2) = 4·2ˣ, so the difference is 4·2ˣ − 2ˣ = 3·2ˣ.

Common wrong answers

If you answered 1

1 subtracts exponents instead of expressions.

If you answered 2

2 treats 2^(x + 2) as 2·2ˣ.

If you answered 4

4 forgets to subtract the 2ˣ.

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