Question

Se A= x²+1 e B= -2x²+x+2, determine o valor de:

A-B

Answer 1

A - B = (x² + 1) - (-2x² + x + 2) = x² + 1 + 2x² - x - 2 = 3x² - x - 1

Answer 2

A-B= x²+1-(-2x²+x+2)

x²+1+2x²-x-2=

3x²-x-1