Алгебра 8 класс.Помогите!!!Срочноооо:((

A1. (x²+3x)/2+(x-3x²)/8=2x x²/8+13x/8=2x x²/8-3x/8=0 (x(x-3))/8=0 x(x-3)=0 x-3=0 or x=0 x=3 x=0 2. A2. x²/(3-x)=2x/(x-3) x²=2x x(x-2)=0 x-2=0 or x=0 x=2 or x=0 2+0=2 2. A3. (x²+3x)/(x-4)=(x²-x)/(4-x) x≠4 (4-x)(x²+3x)=(x-4)(x²-x) -x³+x²+12x=x³-5x²+4x -2x³+6x²+8x=0 -2x(x-4)(x+1)=0 x(x-4)(x+1)=0 x=0 or x-4=0 or x+1=0 x=0 or x=4 not or x=-1 x=0 or x=-1 3. A4. (5y-2)/(2y+1)=(3y+2)/(y+3) (y+3)(5y-2)=(2y+1)(3y+2) 5y²+13y-6=6y²+7y+2 -y²+6y-8=0 -(y-4)(y-2)=0 (y-4)(y-2)=0 y-4=0 or y-2=0 y=4 or y=2 (4+2)/2=3 3. A5. (4x²-11x-3)/(3-x)=0 x≠3 4x²-11x-3=0 (x-3)(4x+1)=0 x-3=0 or 4x+1=0 x=3 not or x=-1/4 x=-1/4 4. B1. (7a-6)/(a³+27)=1/(a²-3a+9)-1/(a+3) a≠-3 7a-6=-a²+4a-6 a²+3a=0 a(a+3)=0 a=0 or a+3=0 a=0 or a=-3 not a=0 B2. y=4x and y=7/(x+1)-1 4x=7/(x+1)-1 x≠-1 4x=(6-x)/(x+1) 4x(x+1)=6-x 4x²+4x=6-x 4x²+5x-6=0 (x+2)(4x-3)=0 x+2=0 or 4x-3=0 x=-2 or x=3/4 y=(-2)*4=-8 y=(3/4)*4=3 A(-2;-8) B(3/4;3) C1. x²+3x=8/(x²+3x-2) (x²+3x)(x²+3x-2)=8 x⁴+6x³+7x²-6x-8=0 (x-1)(x+1)(x+2)(x+4)=0 x-1= or x+1=0 or x+2=0 or x+4=0 x=1 or x=-1 or x=-2 or x=-4