Rewrite the equation in terms of u. (u2 + 3) + u – 2 = 0
u2 + u – 2 = 0
(u2 + 9) + u – 2 = 0
u2 + u + 1 = 0

SECOND ONE // B

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."

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

How do i multiply two digit numbers