Pls help me I’ll give brainliest!

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2