Evaluate the expression using the values
m = 7. r = 8. and t = 21
4m-r+t

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.