а)3х2х−12х-12х−1-6х7+х7+х7+х=90
раскроем скобки
6x2-3x-42x-6x2 = 90
-45x-90 = 0
45x+90 = 0
45x = -90
x = -2
б)1,5х3+2х3+2х3+2х=3хх+1х+1х+1-30
4.5x+3x2 = 3x2+3x-30
1.5x+30 = 0
1.5x = -30
x = -20
в)5х12х−712х-712х−7-4х15х−1115х-1115х−11=30+29х
60x2-35x-60x2+44x = 30+29x
-20x-30 = 0
20x+30 = 0
20x = -30
x = -30/20
х=-1,5
г)24х-6х13х−913х-913х−9=-13-13х6х−16х-16х−1
24x-78x2+54x = -13-78x2+13x
65x+13 = 0
65x = -13
x = -13/65
х=-0,2
а)3х2х−12х-12х−1-6х7+х7+х7+х=90
раскроем скобки
6x2-3x-42x-6x2 = 90
-45x-90 = 0
45x+90 = 0
45x = -90
x = -2
б)1,5х3+2х3+2х3+2х=3хх+1х+1х+1-30
раскроем скобки
4.5x+3x2 = 3x2+3x-30
1.5x+30 = 0
1.5x = -30
x = -20
в)5х12х−712х-712х−7-4х15х−1115х-1115х−11=30+29х
раскроем скобки
60x2-35x-60x2+44x = 30+29x
-20x-30 = 0
20x+30 = 0
20x = -30
x = -30/20
х=-1,5
г)24х-6х13х−913х-913х−9=-13-13х6х−16х-16х−1
раскроем скобки
24x-78x2+54x = -13-78x2+13x
65x+13 = 0
65x = -13
x = -13/65
х=-0,2