Hasil pengurangan (3-2x+x2) dari (2×2-3x+1)

( 3 – 2x + x^2 ) – ( 2x^2 – 3x + 1 )

3 – 2x + x^2 – 2x^2 + 3x – 1

-x^2 + x + 2

x^2 – x – 2

( x + 1 ) ( x – 2 )