a) 2x ( x-5) -3 ( x 2 -2x ) + ( x-2) x =
b) a ( a +b+c ) -b ( a-b+c ) -c ( a-b-c) =
c) x ( x2 +2x + 1 ) - ( -4x3 + 8x2 - 6) : 2 =
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a]
2x(x-5)-3(x²-2x)+(x-2)x=2x²-10x-3x²+6x+x²-2x=-6x
b]
a(a+b+c)-b(a-b+c)-c(a-b-c)=a²+ab+ac-ab+b²-bc-ac+bc+c²=a²+b²+c²
c]
x(x²+2x+1)-(-4x³+8x²-6(:2=
x³+2x²+x+2x³-4x²+3=
3x³-2x²+x+3
zadanie w załączniku