Factor the expression completely. -7x^5-56x^4 Answer Attempt out of 2 square

To factor the expression completely, we need to find the greatest common factor (GCF) of the terms in the expression.<br /><br />The GCF of $-7x^{5}$ and $-56x^{4}$ is $-7x^{4}$.<br /><br />Now, we can factor out the GCF from each term in the expression:<br /><br />$-7x^{5} - 56x^{4} = -7x^{4}(x) - 7x^{4}(8)$<br /><br />Simplifying further, we get:<br /><br />$-7x^{5} - 56x^{4} = -7x^{4}(x + 8)$<br /><br />Therefore, the factored form of the expression is $\boxed{-7x^{4}(x + 8)}$.