1) 5Х+10Х = 3
15Х = 3
Х=3\15 = 1\5 = 0,2
2) -7 = 5Х+25
-5Х = 32
Х =-32\5 - -6, 3\5 = -6,4
3) -2Х+1+5Х-10 = -12+4Х+1
3Х-4Х = -11+10-1
-Х = -2
Х=2
4) Х+Х\5 = -24\5
6\5Х = -24\5
Х = -24\5*5\6
Х = -4
5) Х^2+20X+100 = 4-4X=X^2
X^2+20X+4X-X^2=4-100
24X = -96
X=-4
6) X^2+3X-54 = 0
D=9+4*54 = 225
x1 = (-3+15)\2 = 6
x2 = (-3-15)\2 = -9
7)x^2 - -2x+1 = 2[^2-6x-31
x^2 - 2x - 2x^2+6x = -31-1
-x^2+4x+32 = 0
x2-4x-32=0
D = 16+128 = 144
X1=(4+12)\2 = 8
X2 = (4-12)\2 = -4
8) 8\(X-4)-4\(X-8) = 0
(8*(X-8)-4*(X-4))\((X-4)*((X-8) = 0
8X-64-4X+16 = 0 (Х НЕ РАВНО 4, И Х НЕ РАВНО 8)
4Х - 48=0 4Х = 48
Х=12
ОБОЗНАЧЕНИЕ X^2 - ЭТО Х В КВАДРАТЕ
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