Дополните правильные варианты группировки слагаемых и разложите на множители в произведение двучлена и трехчлена:

\(\displaystyle \color{red}{10x^{\,13}}+20x^{\,5}+\color{red}{15x^{\, 9}}+\color{blue}{6x^{\,4}}+4x^{\,8}+\color{blue}{8}=\)

\(\displaystyle =(\color{red}{10x^{\,13}}+\color{red}{15x^{\, 9}}+\)[ ]\(\displaystyle )+(\)[ ]\(\displaystyle +\color{blue}{6x^{\,4}}+\color{blue}{8})=\)

\(\displaystyle =\big(\)[ ]\(\displaystyle \big)\big(\)[ ]\(\displaystyle \big)\)