TeX Quellcode:
\begin{array}{rcl} (x-15)[-u(2x+14ux-7)+16u-24xu] &=&(x-15)[-u\cdot2x-u\cdot14ux-u\cdot(-7)+16u-24ux] \cr\cr &=&(x-15)[-2ux-14uux+7u+16u-24ux] \cr\cr &=&(x-15)[-14uux-26ux+23u] \cr\cr &=&x\cdot(-14uux)+x\cdot(-26ux)+x\cdot23u-15\cdot(-14uux)-15\cdot(-26ux)-15\cdot23u \cr\cr &=&-14uuxx-26uxx+23ux+210uux+390ux-345u \cr\cr &=&-14uuxx+210uux-26uxx+413ux-345u \end{array}