Faktorkanlah! 1.ײ-9×+20= 2.ײ+13×+30= 3.2ײ+7×+6= 4.3×+6y= 5.3ײ+4×-2= 6.-5y+10= 7.3ײ-2×-8= 8.2a+2b-10c= 9.2ײ+×-1= 10.10ײy-15×y²+20ײy²=

[tex]x^2-9x+20=(x-4)(x-5) \\ x^2+13x+30=(x+3)(x+10) \\ 2x^2+7x+6=(2x+3)(x+2) \\ 3x+6y=3(x+2y) \\ -5y+10=-5(y-2) \\ 3x^2-2x-8=(3x+4)(x-2) \\ 2a+2b-10c=2(a+b-5c) \\ 2x^2+x-1=(x+1)(2x-1) \\ 10x^2y-15xy^2+20x^2y^2=5xy(2x-3y+4xy)[/tex]