Apply the distributive property.

Simplify.

Multiply .

Multiply by .

Multiply by .

Multiply by .

Multiply by .

Add and .

Add and .

Subtract from .

Subtract (y^2-3y-5)-(-y^2-7y+4)

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# Subtract (y^2-3y-5)-(-y^2-7y+4)

Apply the distributive property.

Simplify.

Multiply .

Multiply by .

Multiply by .

Multiply by .

Multiply by .

Add and .

Add and .

Subtract from .

Subtract (y^2-3y-5)-(-y^2-7y+4)