X2 + X – 12 = 0 27/ X2 – X – 6 = 0 28/ X2 – 2X = 3...

26/ x

2

+ x – 12 = 0 27/ x

2

– x – 6 = 0 28/ x

2

– 2x = 3 29/ x

2

– x = –2 ( x – 2 )