Witam proszę o pomoc.
zad1.
a) 2(a+b)+(a-36)=
b) 2(x+1)-(x-1)=
zad 2.
a) 5xy-15 x =
b) xy(dwa do kwadratu) + x (dwa do kwadratu) y =
c) x (dwa do kwadratu) y - xy (dwa do kwadratu) =
zad 3
a) ( x+2)-(x+1)=
b) (a-1)*(2a+1)=
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zad1.
a) 2(a+b)+(a-36)=2a +2b +a-36=3a+2b-36
b) 2(x+1)-(x-1)=2x+2-x+1=x+3
zad 2.
a) 5xy-15 x =5x(y-3)
b) xy² + x ²y =xy(y+x)
c) x ²y - xy²=xy(x-y)
zad 3
a) ( x+2)-(x+1)=x+2-x-1=1
b) (a-1)*(2a+1)=2a²+a-2a-1=2a²-a-1