Question

3x+x elevado ao quadrado parra x = 4

Answer 1

3x + x²

x = 4

3.4 + 4² = 12 + 16 = 28

Resp.: 28

Answer 2

$Para\to x=4\\\\ 3x+ x^{2} \to \\\\ 3*4+4^2\to\\\\ 12+16\to \\\\ 28$