Q: If x is an odd integer, which of the following is an odd integer?\nOptions:\n(A) 2x+2\n(B) x^2\n(C) 2x+4x\n(D) 1+2x+x^2\n(E) 3x-1 Let's give some random thoughts before answering.
User
Plug in an odd integer; in this case 3\n(2*3)+2 = 8 Even\n3^2 = 9 Odd\n(2*3)+(4*3) = 6 + 12 = 18 Even\n1+(2*3)+3^2 = 1+ 6 + 9 = 16 Even\n(3*3)-1 = 9 - 1 = 8 Even
Therefore, the answer is (B).
Assistant