Penyelesaian dari (2×+5)(×-6)=x(2×+3)
(2x + 5)(x – 6) = x(2x + 3)
2x² – 12x + 5x – 30 = 2x² + 3x
2x² – 12x + 5x – 30 = 2x² + 3x
2x² – 7x – 30 – 2x² – 3x = 0
– 10x – 30 = 0
– 10x = 30
x = -3
(2x + 5)(x – 6) = x(2x + 3)
2x² – 12x + 5x – 30 = 2x² + 3x
2x² – 2x² – 12x + 5x – 3x = 30
-12x + 5x – 3x = 30
-7x – 3x = 30
-10x = 30
x = 30/-10
x = -3