How do you solve this? What are the steps? I have a test tomorrow and do not know how to answer questions like these :’(

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?

Consider the first four terms of the sequence below. what is the 8th term of this sequence?