What is the answer to (-243)^2/5

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.