Simplify (x^4)(x^(k-4))

$(x^{4}) (x^{k - 4})$

Step 1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$x^{4 + k - 4}$

Step 2

Combine the opposite terms in $4 + k - 4$ .

Subtract $4$ from $4$ .

$x^{k + 0}$

Add $k$ and $0$ .

$x^{k}$