`a)(2x+1)(4x^2-2x+1)-8x(x^2+2)=34`
`<=>8x^3+1-8x^3-16x=34`
`<=>-16x=33`
`<=>x=-33/16`
`b)(x-3)(2x-2)-(2x+3)(x-5)+3x=22`
`<=>2x^2-2x-6x+6-2x^2+10x-3x+15+3x=22`
`<=>2x=1`
`<=>x=1/2`
`c)(3x+1)(9x^2-3x+1)-3x^2(9x+1)+x(3x-2)-1=20`
`<=>27x^3+1-27x^3-3x^2+3x^2-2x-1=20`
`<=>-2x=20`
`<=>x=-10`
\(a,8x^3+1-8x^3-16x=34\\ -16x+1=34\\ -16x=34-1\\ -16x=33\\ x=33:\left(-16\right)\\ x=-\dfrac{33}{16}\\ b,2x^2-6x-2x+6-\left(2x^2+3x-10x-15\right)+3x=22\\ 2x^2-8x+6-2x^2+7x+15+3x=22\\ 2x+21=22\\ 2x=1\\ x=\dfrac{1}{2}\\ c,27x^3+1-27x^2-3x^2+3x^2-2x-1=20\\ -2x=20\\ x=-10\)
