2(x - 1)2 + (x + 3)2 = 3(x - 2)(x + 1)
<=> 2(x2 - 2x + 1) + x2 + 6x + 9 = 3(x2 + x - 2x - 2)
<=> 2x2 - 4x + 2 + x2 + 6x + 9 = 3x2 + 3x - 6x - 6
<=> 3x2 + 2x + 11 = 3x2 - 3x - 6
<=> 5x = -17
<=> x = \(-\frac{17}{5}\)
Vậy x = \(-\frac{17}{5}\)
#Học tốt!