What is the meaning of discriminant in type of roots in quadratic function?

the part of the quadratic formula underneath the square root symbol

Step-by-step explanation:

the discriminant tells us whether there are two solutions, one solution, or none.

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.