Question

Dada a função quadratica f(x)= 3x² - 2x+1 calcule:

a) f(raiz quadrada de 7) 

Answer 1

$f( \sqrt{7)} =3( \sqrt{7})^2-2( \sqrt{7})+1\\\\\ f(\sqrt{7}) = 3*7-2\sqrt{7}+1\\\\\ f(\sqrt{7}) = 22-2\sqrt{7}$