a)xz+5x+yz+5y=
xz+5x+yz+5y=x(z+5)+y(z+5)=(x+y)(z+5)
b)5xy+10xt+2by+4bt=
5xy+10xt+2by+4bt= 5x(y+t)+2b(y+t) = (5x+2b)(y+t)
c)x do sześcianu + x do kwadratu +3x+3=
x^3 + x^2 +3x+3= x^2(x+1)+3(x+1)=(x^2+3)(x+1)
d) x do kwadratu+xy+2y+2x=
x^2+xy+2y+2x= x(x+y)+2(x+y)=(x+2)(x+y)
e) 7x do kwadratu+7xy+2x+2y=
7x^2 +7xy+2x+2y= 7x(x+y)+2(x+y)= (7x+2)(x+y)
f) 2x do kwadratu y -10x do kwadratu -3y+15 =
2x^2 y -10x^2-3y+15 = 2x^2(y-5)-3(y-5) = (2x^2-3)(y-5)
g) 2ab-b-4a+2=
2ab-b-4a+2= b(2a-1)-2(2a-1)=(b-2)(2a-1)
h)2ax-2a+x-1=
2ax-2a+x-1=2a(x-1)+(x-1)=(2a+1)(x-1)
i)3xy-6x-y+2=
3xy-6x-y+2= 3x(y-2)-(y-2)=(3x-1)(y-2)
j)2x+5y-xy-10=
2x+5y-xy-10= 2x-xy-10+5y=x(2-y)-5(2-y)=(x-5)(2-y)
k)4xy+8x-6y-12=
4xy+8x-6y-12= 4x(y+2)-6(y+2)=(4x-6)(y+2)
l) 8(a-2)+2b_-a+2)+c(2-a)=
podejrzewam,że wkradł się tu błąd
8(a-2)+2b(-a+2)+c(2-a)=8(a-2)-2b(a-2)-c(a-2)=(8-2b-c)(a-2)
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