zad 7.24 pilnie pomocy błagam. ktoś coś??

[latex]7.24a) frac{3x-5}{x^2+3x}* frac{2x^2-7x}{6x-10}= \ \ frac{3x-5}{x(x+3)}* frac{x(2x-7)}{2(3x-5)}= \ \ frac{1}{(x+3)}* frac{(2x-7)}{2}= oxed{ frac{2x-7}{2(x+3)}} \ \ [/latex] [latex]b) frac{4x^2-9}{2x^2-3x}: frac{15+10x}{3x^2}= \ \ frac{(2x-3)(2x+3)}{x(2x-3)}: frac{5(3+2x)}{3x^2}= \ \ frac{(2x-3)}{(2x-3)}: frac{5}{3x}= \ \ frac{1}{1}: frac{5}{3x}= oxed{ frac{3x}{5}} \ \[/latex] [latex]c) frac{x^2+x-2}{2x^2+5x-3}* frac{x^2+4x+3}{x-1} * frac{2x-1}{x^3-1}= \ \ frac{(x-1)(x+2)}{(x- frac{1}{2})(x+3)}* frac{(x+1)(x+3)}{x-1} * frac{2(x- frac{1}{2})}{(x+1)(x^2-x+1)}= \ \ frac{(x-1)(x+2)}{(x+3)}* frac{(x+3)}{x-1} * frac{2}{(x^2-x+1)}= \ \ frac{(x+2)}{1}* frac{1}{1} * frac{2}{(x^2-x+1)}= oxed{ frac{2(x+2)}{x^2-x+1}}[/latex] [latex]d) frac{x^2-9}{x^2-3x+2}* frac{x^2-2x}{x^2+2x-3}* frac{x^2-x}{x^2}= \ \ frac{(x-3)(x+3)}{(x-2)(x-1)}* frac{x(x-2)}{(x-1)(x+3)}* frac{x(x-1)}{x^2}= \ \ frac{(x-3)(x+3)}{1}* frac{x}{(x-1)(x+3)}* frac{x}{x^2}= \ \ frac{(x-3)}{1}* frac{1}{(x-1)}* frac{1}{1}= oxed{ frac{x-3}{x-1} }[/latex] pozdrowienia!!!!