Odpowiedzi

2009-11-23T16:12:06+01:00
(x-2)(x+3) ≥ (x-5)(x-6)
x²+3x-2x-6 ≥ x²-6x-5x+30
3x+6x+5x ≥ 30+6
14x ≥ 36 /:14
x ≥ 36/14
x ≥ 2,57
2009-11-23T16:15:07+01:00
(x-2) (x+3)>=(x-5) (x-6)
x²-6 >=x² + 30
x²-x² >= 36
x>=36
2009-11-23T16:19:09+01:00
(x-2)(x+3)>=(x-5)(x-6)
x²+3x-2x-6 >= x²-6x-5x+30
-6-30>= -6x-5x-3x
-36>= -14x
2,57 >= x