Question

Dada a função f(x) = y = x² - x, com x Æ IR e y Æ IR determine o valor de f(1) + 3f(-1) – 5f(3) + f(0)

Answer 1

 Olá Bartok,
boa tarde!

$f(1)+3\cdot\,f(-1)-5\cdot\,f(3)+f(0)=\\\\(1-1)+3(1+1)-5(9-3)+(0-0)=\\\\0+3\cdot2-5\cdot6+0\\\\6-30=\\\\\boxed{-24}$