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W(x)= x^3 + ( a + b ) x^2 + 7x - 5
V(x)= x^3 + 8x^2 - ( a - 2b ) x - 5
8=a+b
7=a-25
rozwiazujemy uklad rownan
a=8-b
7=8-b-25
b=-24
a=8-b=32