Question

Calcule o valor de:
y = 2-² + 2² -2-¹ / 2-² - 2-¹

Answer 1

y = 2-² + 2² -2-¹ / 2-² - 2-¹

y = 1/2² + 4 - 1/2 / 1/2² - 1/2

y = 1/4 + 4 - 1/2 / 1/4 - 1/2

y = 1+16-2/4 / 1-2/4

y = 15/4 / -1/4

y = 15/4 × -4/1

y = -15 ✓