HELP WILL GIVE BRAINLEST FOR CORRET ASWER

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Multiply and simplify. 2x^2 y^3 z^2 · 4xy^4 x^2 i will mark you brainliest if right. show how you got the answer, !