Question

me ajudem por favor: (x-1)(x-2)=6

Answer 1

X-1 x-2 -6=0 

x+x= 0+2+1+6

2x= 9

x= 9

     2

x= 3

Answer 2

Resposta:

(x-1)(x-2)=6

x*(x-2) -1*(x-2)=6

x²-2x-x+2=6

x²-3x-4=0

x'=[3+√(9+16)]/2 =(3+√25)/2 =(3+5)/2=4

x''=[3-√(9+16)]/2 =(3-√25)/2 =(3-5)/2=-1