Question

4X - X^ + (- X)^ para x = 2

Answer 1

Não vou mentir fiquei confusa com os ^, mas resolvi de 3 maneiras;

a)

$4x-x^{+(-x)^{2}}\\4.2-x^{+(-2)^{2}}\\4x-x^{-2^{2}}\\4x-x^{-4}\\4x-2^{-4}\\4x-0,0625\\4.2-0,0625\\8-0,0625=7,375$

b)

$4x-x^2+(-x)^2\\8-x^2+(-x)^2\\8-(x.x)+(-x)^2\\8-(2.2)+(-x)^2\\8-4+(-2)^2\\8-4-2^2\\8-4-4\\8-8=0$

c)

$4x-x^{+(-x)}\\\\4x-x^{+(-x)}\\4.2-x^{+(-2)^}$

=8-2^(-2^)