Question

Rozwiaz rownanie wymierne;

(x-3) (1-x)=(2x-1)(x-3)

Answer 1

x-x^-3+3x-= 2x^-6x-x+3    ^- do kwadratu

-3x^+11x=0

delta= 121

pierwiastek z 121 to 11

 

x1= -b - delta \ 2a  x1= 3,6

 

x2 = -b +delta \2x  x2= 0

Answer 2

(x-3)(1-x)=(2x-1)(x-3)

x-x^2-3+3x=2x^2-6x-x+3

-x^2+11x=0

 

-x^2=-11x

x^2=11x /x

x=11