0. Review of Algebra

In Exercises 59–66, perform the indicated operations. Indicate the degree of the resulting polynomial. (3x⁴ y²+5x³ y−3y)−(2x⁴ y²−3x³ y−4y+6x)

In Exercises 33–68, add or subtract as indicated. (4x²+x−6)/(x²+3x+2)−3x/(x+1)+5/(x+2)

In Exercises 67–82, find each product. (3x−y)(2x+5y)

In Exercises 67–82, find each product. (9x+7y)²

In Exercises 67–82, find each product. (x−y)(x²+xy+y²)

Find each product : (4x+5)(4x-5)

Perform the indicated operations. Indicate the degree of the resulting polynomial. $(7x^2-8xy+y^2)+(-8x^2-9xy-4y^2)$

Perform the indicated operations. Indicate the degree of the resulting polynomial. $(13x^3{y}^2-5x^{2}y-9x^2)-(-11x^3{y}^2-6x^{2}y+3x^2-4)$

In Exercises 83–90, perform the indicated operation or operations. (3x+4y)²−(3x−4y)²

Find each product. (x+7y)(3x-5y)

Perform the indicated operation or operations. (3x+5)(2x−9)−(7x−2)(x−1)