Please help me with this concept!! i do not understand! Show that r is a double root of P(x)=0 by verifying that x-r is a factor of both P(x) and P(x)÷(x-r) P(x)= x4+2x2+8x+5; r=-1

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?