Wykonaj mnożenie :
a) x2 *(2x3 – x +2) =
b) -3x * ( x3+ x2 –2) =
c) ( 3x – 2) ( 2x3 – 3x2 – 5) =
d) (x2 – 2x + 3) (x3 – 7x) =
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a) x2*(2x3-x+2)=2x5-x3+2x2
b) -3x*(x3+x2-2)= -3x4-3x3+6x
c) (3x-2)*(2x3-3x2-5)= 6x4-9x3-15x-4x3+6x2+10=6x4-13x3+6x2-15x+10
d) (x2-2x+3)*(x3-7x)=x5-2x4+3x3-7x3+14x2-21x=x5-2x4-4x3+14x2-21x