Question

Me ajudem por favor

Answer 1

$\frac{12x - 17}{(x - 1)(x - 2)} = \frac{a(x - 2) + b(x - 1)}{(x - 1)(x - 2)} \\ \\ 12x - 17 = ax - 2a + bx - b \\ 12x - 17 = (a + b)x - (2a + b) \\ \\ a + b = 12 \\ 2a + b = 17 \\ \\ a = 5 \\ b = 7$