When will a quadratic equation have two different real roots? a) when a discriminant

A

Step-by-step explanation:

When a discriminant is positive it has two distinct roots. When a discriminant is negative it has no real roots. When a discriminant is zero it has two roots that are the same so that counts as one root.

When the discriminators is greater than zero

Based on what i read, closure properties of polynomials occur in multiplication, addition, and subtraction operations.

under multiplication, the coefficient and exponents can change but still fit the in a polynomial model.

under addition and subtraction, only the coefficient changes whereas the variables and exponents remains the same. thus, producing a sum or difference that is still a polynomial.