Question

SE NAO SOUBER NAO RESPONDE
1) Simplifique as expressões:

a) (3x + 2)(3x – 2) + (x + 2)²

b) (5x – 6)² - (5x – 4)(5x + 4)

c) (2a + 1)³ - 6a(2a + 1)

d) (2x + 1)² + (x – 5)²

e) (7ab² - 3ª + 5b) + ( - 2ab² + a – b)

f) 10x² - (5x + 6) – [2x – (3x² - 2)]​

Answer 1

A) 9x²- 6x + 6x - 4 + x² + 4 >>>>os mumeros iguas com sinais diferentes é 0

9x² + x²

10x²