0. Review of Algebra

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^3y^2-5x^2y-9x^2)-(-11x^3y^2-6x^2y+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)

In Exercises 83–90, perform the indicated operation or operations. (3x+5)(2x−9)−(7x−2)(x−1)

In Exercises 83–94, find each product.(5x + 7y − 2)(5x + 7y + 2)

In Exercises 83–94, find each product.[5y + (2x+3)][5y − (2x+3)]

The special products can be used to perform selected multiplications. On the left, we use (x+y)(x-y) = x^2-y^2. On the right, (x-y)^2 = x^2-2xy+y^2. Use special products to evaluate each expression. 102^2

The special products can be used to perform selected multiplications. On the left, we use (x+y)(x-y) = x^2-y^2. On the right, (x-y)^2 = x^2-2xy+y^2. Use special products to evaluate each expression. < SEE SAMPLE B> 71^2

In Exercises 117–130, simplify each algebraic expression.7x+5x

In Exercises 117–130, simplify each algebraic expression. 6x²-x²

In Exercises 121–128, write each English phrase as an algebraic expression. Then simplify the expression. Let x represent the number. A number decreased by the sum of the number and four

In Exercises 121–128, write each English phrase as an algebraic expression. Then simplify the expression. Let x represent the number. Six times the product of negative five and a number

In Exercises 121–128, write each English phrase as an algebraic expression. Then simplify the expression. Let x represent the number. Eight decreased by three times the sum of a number and six

In Exercises 117–130, simplify each algebraic expression. 18x²+4-[6(x²-2)+5]