Form the union in the following sets r={10, 15, 20} s={20, 25} rus=

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)

Factor the expression using gcf 9b+45