Question

Como simplificar essas expresoes

A)
3x²-12
---------
6x+12

B)
x^4-1
--------
x^3+x

Answer 1

A)  3x² - 12 = x ( 3x - (12/x))
     6x + 12 = x(6 + (12/x))

B)  x^4 -1 = x(x^3 - (1/x))
     x^3 + x = x(x^2 +1)

Obs: x * (12/x) = 12x /x = 12 * 1 = 12
        x * (1/x) = 1x /x = 1 * 1 = 1