M(x) = 3x^3–2x+4x^2–x+5 N(x) = 2x^2–x+3x^3–3x^2+9 a). Thu gọn các đa thức trên theo lũy thừa giảm dần của biến b). Tính M(x)+N(x) c). Tìm nghiệm của đa thức P(x)=M(x)+N(x)–6x^3–3x^2–2x

6x - 8 = 16 solve the following equation. then place the correct number in the box provided.

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."