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II = x+3
III= x+6
IV= x+9
x(x+3+138= (x+6)(x+9)
x^2+3x+138=X^2 +9x+6x+54
-12x=-84
x+7
I liczba =7
II=10
III=13
Iv=16
Enjoy ;D
x, x +3, x+6, x +9
x*(x+3) =(x+6)*(x+9) - 138
x^2 + 3x = x^2 +9x +6x + 54 - 138
3x -15x = 54 - 138
-12x = - 84
x = (-84) :( -12) = 7
Te liczby,to: 7,10,13,16
x² +3x + 138 = x² +15x +54
x² +3x - x² -15x =54 -138
-12x = -84
x= 7
odp: Te liczby to : 7,10,13,16.