Question

wyznacz pierwiastki wielomianu W(x)=

Answer 1

w(x)=4x²(x-3)-(x-3)=(4x²-1)(x-3)=(2x-1)(2x+1)(x-3)

x1=1/2

x2=-1/2

x3=3

 

licze na naj 

Answer 2

4x³-12x²-x+3=0

4x²(x-3)-1(x-3)=0

(4x²-1)(x-3)=0

4x²-1=0 ∨ x-3=0

x² = ¼  ∨  x=3

x = ½  v  x=-½  v  x=3