Use Your Identities!

Algebra Level 2

xy=7x+y=5x3+y3= ?\Large\begin{aligned} \color{#D61F06}{x}\color{#3D99F6}{y} &= 7 \\ \color{#D61F06}{x}+\color{#3D99F6}{y} &= 5 \\ \color{#D61F06}{x}^3+\color{#3D99F6}{y}^3 &= \ \color{#20A900}{?} \end{aligned}

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