Evaluate the expression of x=-2. 2x^2 - 3

What are “like terms”? why can we only add like terms?

What is a graph with a never ending line called?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.