Question

20. Rezolvati in multimea numerelor rationale ecuatiile:
a). (x-2)la2+3x=x(x+1)
b). (x+3)(x-1)=(x+3)la2+8
c).(x-1)la2-x(x+5)=3x+7
d).(x+3)(x-3)+2x=(x+4)la2+5
e).(x+1)la2-3(x+7)la2=3+(x-2)la2
f). (x+2)(x-2)+4(x+3)=(x+2)la2-3x

REPEDE!!!!

Answer 1

eu scriu deodata raspunsul

1) (x-2)la2 +3x*(x+1)=0
    xla2-x-x*(x+1)=-4
    -2x=-4
    x+-4/-2
    x=2
2) (x+3)*(x-1)-(x la2 +2*x*3+3la2)=8
    (x+3)*(x-1)-xla2 -6x-9=8
    (x+3)*(x-1)-xla2 -6x=8+9
    (x+3)*(x-1)-xla2-6x=17
    x*x-x*1+3*X-3*1-Xla2 -6x=17
    xla2-x+3*x-3-xla2-6x=17
    -4x-3=17
    -4x=17+3
   -4x=20
  x=20/-4
  x=-5

a sat mai raspund mai incolo la urmatoareleca am obosit
putin