Geometry Questions please solve 18-22. Worth 70 points

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.