Question 5Multiply x2 + x + 1 by x2 - x + 1A.x4 + 3x2 + x + 1B.x4 + x2 + 1C.x4 + 4x2 + 6x + 1D.x4 - 6x2 - 4x + 1E.x4 - x3 - x2 - x + 1Objective Show full explanation