October 2018 1 20 Report

Rozwiąż równanie.Tak jak to

x^5-2x^4-15x^3=0
x^3(x^2-2x-15)=0
x=0 lub x^2-2x-15=0

delta=4+60=64=8^2
x1=2-8/2=-3,x2=2+8/2=5

ma trzy rowiazania 0,-3 i 5

a)x^3-7x^2+12x=0
b)-2x^4+9x^3+5x^2=0
c)3x^3+4x^2+x=0
d)4x^5-3x^4+2x^3=0


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