(iv) (x + 2) (x + 3) + (x – 3) (x - 2) – 2x (x + 1) = 0
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x2+3x+2x+6+x2-2x-3x+6-2x2-2x=o
2x2-2x2+5x-5x-2x+12=0
12-2x=0
2x=12
x=6
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