А1.1) x -
5x =
x(x+2)-5x =
x² +2x-5x =
x² -3x =
x(x-3) x+2 x+2 x+2 x+2 x+22)
x(x-3) :
x-3 =
x(x-3) *
x+2 = x x+2 x+2 x+2 x-3Ответ: 2)А2.1)
3a² *
b =
a b² 6a 2b2)
a+8b -
a =
a+8b-a =
8b =4 2b 2b 2b 2bОтвет: 2)А3.a =
3 =
3 =
3*18 =
54 =4 ¹⁰/₁₁
1 +
1 +
1 6+3+2 11 11 3 6 9 18Ответ: 1)А4.1)
x -
1 =
x² -y² =
(x-y)(x+y) y² x xy² xy²2)
1 -
1 =
x-y y x xy3)
(x-y)(x+y) :
x-y =
(x-y)(x+y) *
xy =
x+y xy² xy xy² x-y yОтвет: 3)В1.1)
1 -
1 -
1 = (a-x)(x-1) (a-x)(a-1) (a-1)(x-1)=
a-1-(x-1)-(a-x) =
a-1-x+1-a+x =
0 = 0 (a-x)(x-1)(a-1) (a-x)(x-1)(a-1) (a-x)(x-1)(a-1)2) 0 *
a³-8x³ = 0 a⁴+b⁴Ответ: 0.В2.y=
2m - x 3c
2m = y+x 3c2m =3c(y+x) m =
3c(x+y) 2m= 1.5c(x+y)Ответ: 1,5c(x+y)