Proszę o pomoc.
Zadanie 1 Uprość wyrażenia :
wzór pokazowy : 2(x-3)-5(x+1)=2x-6-5x-5=-3x-11
a) 4(2x-1)-6(2x-3)=
b) -5(2x-3)-4(x-5)=
c) 2x(2x-3)-x^2 (x-1) =
legenda : x^2 -x do kwadratu ;p
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a) 4(2x-1)-6(2x-3)=6x-4-12x-18=6x-14
b)-5(2x-3)-4(x-5)=10x-15-4x-20=6x-5
c)2x(2x-3)-x^2(x-1)=4x^2-6x-x^2=3x^2 - 6x