Use the Binomial Theorem.

Apply the product rule to .

Raise to the power of .

Apply the product rule to .

Raise to the power of .

Multiply by .

Multiply by .

Apply the product rule to .

Raise to the power of .

Multiply by .

Raise to the power of .

Multiply by .

Apply the product rule to .

Raise to the power of .

Multiply by .

Raise to the power of .

Multiply by .

Apply the product rule to .

Raise to the power of .

Multiply by .

Raise to the power of .

Multiply by .

Apply the product rule to .

Raise to the power of .

Multiply by .

Raise to the power of .

Multiply by .

Multiply by .

Raise to the power of .

Multiply by .

Raise to the power of .

Simplify (4v+5)^7