Question

"Simplifique a expressão"
:(2+x)² - (x+2)²

Answer 1

(2 + x)² - (x + 2)²

(2 + x) • (2 + x) - (x + 2) • (x + 2)

(4 + 2x + 2x + x²) - (x² + 2x + 2x + 4)

(4 + 4x + x²) - (x² + 4x + 4)

4 + 4x + x² - x² - 4x - 4

0