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droopette
E= (x - 3 )² - ( x - 1 )(X -2 )
=x²-6x+9-(x²-2x-x+2)
=x²-6x+9-x²+2x+x-2
=-3x+7

E= (x - 3 )² - ( x - 1 )(X -2 )
E= x²-2*x*3-3² +(-x+1)(x-2)
E= x²- 6x-9-x*x+x*2+1*x-1*2
E=x² -6x-9- x² +2x+x-2
E= 4x-11

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