Please help! Will give Brainliest if possible.

Identify each equation that has exactly two distinct real roots.

An explanation would be greatly appreciated, since I have no idea of how to do these problems.
Have a great rest of your day!

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Find x to the nearest hundredth place

How do i do this? i don’t understand