1) (4b+9+2b-3)/6b=(6b+6)/6b=(b+1)/b
2) (q+2-6+q)/(q-2)=(2q-4)/(q-2)=2(q-2)/q-2=2
3) -a+3/3-a=1
4) (m-n) *(m-n) /m-n=m-n
(x^2+1-5x+8-x)/(x-3)^2=(x^2-6x+9)/(x-3)^2=(x-3)^2/(x-3)^2=1
1)
(3x-x²)/2+(2x²-x)/6=x |×6
3*(3x-x²)+2x²-x=6x
9x-3x²+2x²-x=6x
x²-2x=0
x*(x-2)=0
x₁=0 x₂=2
Ответ: x₁=0 x₂=2.
2)
(5x-7)/(x-3)=(4x-3)/x
(5x-7)*x=(4x-3)*(x-3)
5x²-7x=4x²-15x+9
x²+8x-9=0 D=100
x₁=1 x₂=-9
Ответ: x₁=1 x₁=-9.
(x-1)(x-2)(x+3)-(x+1)(x+2)(x-3)= x^3-7x+6-x^3+7x+6=-7x+6+7x+6=6+6=12