Question

pfvr me ajudem, dá pra enxergar?

Answer 1

Resposta:

4)

a) 4a² - 10a² - 6a² + 4a² - 3a² = -11a²

b) -3ax/4 + 4ax/3 - ax/2 = ax/12

5)

a) 5x + x = 90 → x = 15°

b) 2x + x - 15 = 90 → x = 35°

6) x = 40°

a) 30°

b) 150°

8) x = 6°

9) x = 10°

AVC = 60°