Question

(2a-7)(2a-z) what is the answer ?

Answer 1

$\boxed{\begin{array}\quad\begin{tabular}{m{3.5em}cccc}&& 2x^2& -2x&-5\\\cline{1-6}\multicolumn{2}{l}{x +1\big)}&2x^3&-2x&-5\\&& 2x^3&+2x^2&&\\\cline{3-4}&&&-2x^2&-7x&+8&\\&&&-2x^2&-2x &\\\cline{4-5}&&&& -5x&+8\\&&&&-5x&-5\\\cline{5-6}&&&&&+13\\\end{tabular}\end{array}}$