1) а⁹+а⁴ / а⁵+1 = а⁴(а⁵+1) / а⁵+1 = а⁴
а⁴ = (- 1/3)⁴ = 1/81
2) 3m³-48 / 3m-6 = 3(m³-16) / 3(m-2) = m³-16 / m-2
m³-16 / m-2 = (-4)³-16 / -4-2 = -64-16 / -6 = -80/-6 = 13 1/3
3) b¹²+b³ / b⁹+1 = b³(b⁹+1) / b⁹+1 = b³
b³ = (-0,5)³ = -0,125
4) 4m²-4m+1 / 4m-2 = (2m-1)² / 2(2m-1) = 2m-1 / 2
2m-1 / 2 = 6*2-1 / 2 = 11/2 = 5,5