Sketch each collection of tiles below. name the collection using a simpler algebraic expression, if possible. if it is not possible to simplify the expression, explain why not. a. (-2x) + 5 + 3x - 4x + (-1) + (-x). b. six plus four times a number, plus four minus four times the number. c. three groups of a number plus two.
d. 5+7x^2+4x e. 4x^2−2x^2+(−6)+3