ОТВЕТ: 2 .....................
1. 3x - 6 = 9
3x = 9+6
3x = 15
x = 5
2. 4x - 2 = 3x - 7
4x - 3x = -7+2
x = -5
<span>(х²-10х)/6 – (5-2</span>x)/3+x+1=0 (умножим
на 6)
<span>(х²-10х) – 2*(5-2</span>x)+6x+6=0
<span>х²-10х – 10</span>+4x+6x+6=0
<span>х²-</span>4=0
<span>х²</span>=4
x= √4
x=2
((2х-2)(3-х)-(х+3)²) / 9-х² = 5
6х-2х²-6+2х-х²-6х-9=5*(9-х²)
-3х²+2х-15=45-5х²
2х²+2х-60=0
х²+х-30=0; Д=11
х1=(-1+11)/2=5
х2=(-1-11)/2=-6