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w(x)=-5x³+2x²-3
stopień 3 bo najwyzsza potęga to sześcian
w(√2)=-5*(√2)³+2*(√2)²-3=-5*2√2+2*2-3=-10√2+4-3=-10√2+1
w(x)=3x³+2x²-5x-3
wielomian ten jest stopnia 3-go
licze jego wartosc :
w(-√2)=3x³+2x²-5x-3
w(-√2)=3*(-√2)³+2*(-√2)²-5*(-√2)-3
w(-√2)=3*(-2)+2+5√2-3
w(-√2)=-6+2-3+5√2
w(-√2)=-7+5√2