Question

SE A=X²+1 e B=2X²+X+2, DETERMINE O VALOR DE: a)A-B b)3A

Answer 1

a - b = (x²+1)-(2x²+x+2)
= x²+1-2x²-x-2
= -x² -x -1

3a = 3.(x²+1) = 3x² + 3