Regroup terms.

Reorder the expression.

Move .

Move .

Factor out of .

Rewrite as .

Factor out of .

Factor out of .

Regroup terms.

Subtract from .

Factor out of .

Factor out of .

Rewrite as .

Factor out of .

Factor out of .

Reorder and .

Rewrite as .

Factor out of .

Add and .

Remove unnecessary parentheses.

Factor out negative.

Multiply by .

Multiply by .

Add and .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Factor (-7x-5x^4+5)-(-7x^4-5-9x)