Given that the solutions to a quadratic equation are −7 8, which of the following could represent the quadratic function?

a: x^2+15x+56 x 2 + 15 x + 56
b: x^2-x-56 x 2 − x − 56
c: x^2-15x-56 x 2 − 15 x − 56
d: x^2+x-56 x 2

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no