Question

Simplifique as expressões:

A. (3x+2) × (3x-2) + (x+2)²

B. (5x-6)² - (5x+4) × (5x-4)

C. 32m² + 16m - 2 × (4m+1)²

Answer 1

Resposta:

A) (3x + 2)(3x - 2) + (x + 2)²

(3x)² - 2² + x² + 4x + 4

9x² - 4 + 4 + x² + 4x

10x² + 4x

B) (5x - 6)² - (5x + 4)(5x - 4)

(5x)² - 2.5x.6 + 6² - ((5x)² - 4²)

25x² - 60x + 36 - 25x² + 16

-60x + 52

C) 32m² + 16m - 2(4m + 1)²

32m² + 16m - 2(16m² + 8m + 1)

32m² + 16m - 32m² - 16m - 2

-2

Espero Ter Ajudado !!