Now consider a subset of the polynomials, the quadratics (polynomials with a degree of 2). Which operations would the set of quadratics be closed under? For each operation explain why it is closed or provide a counterexample showing why it is not closed. (Hint: Use quadratic expressions to test each operation, such as x2-1 or 3x2+x.)

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

eve and marks ratios are equivalent

step-by-step explanation:

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )