Factor Using U-Substitution. 36 + X⁴ - 13x²

Q18: Simplify the expression using the product to

Q19: Compute the product. (x + 4)(x -

Q20: Factor out the common binomial factor. 10x(x

Q21: Write the polynomial in standard form and

Q22: Simplify the compound rational expression. Use either

Q24: Simplify the expression using the quotient to

Q25: Simplify the expression by rationalizing the denominator.

Q26: Use the following to answer questions :

Q27: Factor the expression completely, if possible. Rewrite

Q28: Compute as indicated. Write final results in