Simplify each term.

Combine and .

Move to the left of .

Combine and .

Move to the left of .

Simplify terms.

Combine and .

Apply the distributive property.

Simplify.

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Cancel the common factor of .

Move the leading negative in into the numerator.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Combine and .

Multiply by .

Combine and .

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Cancel the common factor of .

Move the leading negative in into the numerator.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Combine and .

Multiply by .

Combine and .

Multiply by by adding the exponents.

Move .

Multiply by .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Simplify each term.

Move to the left of .

Move the negative in front of the fraction.

Move the negative in front of the fraction.

The largest exponent is the degree of the polynomial.

Find the Degree (7n^3-21/8n^2-28/5n)(3/7n^2)