Question

(x+2)²-(x+4)²+4x+12? com calculos

Answer 1

(x+2)²-(x+4)²+4x+12?

x² + 2.2.x +2² -(x² + 2.4.x +4²) + 4x + 12
x² + 4x + 4 - x² - 8x -16 + 4x + 12
 + 4 -16 + 12
      0

Answer 2

$x^{2} +4+ x^{2} -16+4x+12 x^{4}+24+4x$