For questions 2 and 3, simplify the polynomial.
2. 3x^2 + 6 - 2x + 5x - 4x^2 = 9
a. -x^2 + 3x + 15
b. 7x^2 + 3x + 3
c. x^2 - 3x + 15
d. -x^2 + 7x + 15
3. 3x^2 + 5x - 7x + 3 - 5x^2 + 2
a. -2x^2 + 2x + 5
b. -2x^2 - 2x + 5
c. 2x^2 - 2x + 5
d. 2x^2 + 2x + 5

Recall the definition of a polynomial expression. find two polynomial expressions whose quotient, when simplified, is. use that division problem to determine whether polynomials are closed under division. then describe how theother three operations-addition, subtraction, and multiplication-are different from division of polynomials.

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7

Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10