$c) (2-x)(1+2x)+(1+x)-(x^{4}+x^{3}-5x^{2}-5)\\=2+4x-x-2x^{2}+1+x-x^{4}-x^{3}+5x^{2}+5\\=8+4x+3x^{2}-x^{4}-x^{3}\\=-x^{4}-x^{3}+3x^{2}+4x+8\\d) (x^{2}-7)(x+2)-(2x-1)(x-14)+x(x^{2}-2x-22)+35\\=x^{3}+2x^{2}-7x-14-(2x^{2}-28x-x+14)+x^{3}-2x^{2}-22x+35\\=x^{3}+2x^{2}-7x-14-(2x^{2}-29x+14)+x^{3}-2x^{2}-22x+35\\=x^{3}-7x-14-2x^{2}+29x-14+x^{3}-22x+35\\=2x^{3}+0+7-2x^{2}\\=2x^{3}-2x^{2}+7$