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3x(x2–4x+4) 3x (x–4)2 3x(x+2)(x–2) 3x (x–2)2
X1 X2 (X1,X2) (X1,X2,X3,X4)
12x =18(28-x); 2×12x =18(28-x); 2×18x =12(28-x); 12x =2×18(28-x) ;
{X1},{X1X2},{X1X3} {X1},{X1X3} {X1} {X2},{X3}
X1 X2 (X1,X2) (X1,X2,X3,X4)
{X1},{X1X2},{X1X3} {X1},{X1X3} {X1} {X2},{X3}
X1 X2 (X1,X2) (X1,X2,X3,X4)
x1=10,x2=2 x1=12,x2=10 x1=12,x2=2 x1=2,x2=2
x1=10,x2=2 x1=12,x2=10 x1=12,x2=2 x1=2,x2=2
x1=10,x2=2 x1=12,x2=10 x1=12,x2=2 x1:2,x2=2