Question 200831
9y^2 -12y +4,,,,,,,,,factors  of  9(9-1, 3-3)  factors  of  4(4-1, 2-2),,, (+) third  term  means  signs  are  the  same,  and  factor  multiples  add,,,,(-) 2nd  term  means,  signs  are (-).
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( 3y-2) (3y-2)
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F = 3y*3y= 9y^2
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O= 3y*-2 = -6y
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I = 3y *-2 = -6y
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L = -2*-2 = +4
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combining  middle  terms  ,,,  9y^2 -12y +4 
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