Uprosc wyrazenie algebraiczne
a) (2x-5y)(x-3y)=
b) (4a-5c)(-c+a)=
c) (-a+b+c)(2a+b)=
d)(-2x-7y)(x-y)=
e)(-xy+2c)(-5xy+c)=
f)(-10a+1)(-a+5)=
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a)2x²-6xy-5xy+15y²=2x²+15y²-11xy
b)-4ac+4a²+5c²-5ac
c)-2a²-ab+2ab+b²+2ac+bc=-2a²+b²+ab+2ac+bc
d)-2x²+2xy-7xy+7y²=-2x²+7y²-5xy
e)5x²y²-cxy-10cxy+2c²=5x²y²+2c²-11cxy
f)10a²-50a-a+5=10a²-51a+5