Question

Skróć ułamki.

9+6x+x²

x²-9

Rozwiąż równania:

a) (x-1)x² - 2x(x-1)+(x-1)=0

b) 9(x=2) - 6x(x+2) + (x+2)x²=0

Pomocy! :(

Answer 1

9+6x+x²/x²-9=x²+6x+9/(x-3)(x+3)=(x+3)²/(x-3)(x+3)=(x+3)/(x-3)

odp.(x+3)/(x-3)

a)(x-1)x²-2x(x-1)+(x-1)=0

x-1=0

x=1

x²=0

x=0

-2x=0

x=0

x-1=0

x=1

x-1=0

x=1

Opd. x=1, x=0

b)9(x+2)-6x(x+2)+(x+2)x²=0

x+2=0

x=-2

-6x=0

x=0

x+2=0

x=-2

x+2=0

x=-2

x²=0

x=0

odp.x=-2, x=0