Which polynomial represents the sum below? (X^8+2x^4+1)+(2x^4+x^2+1)

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

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.

Write the factored form of this trinomial 9x^2+18x-7