[tex]3(2x + 5) \\ 3 \times 2x + 3 \times 5 \\ 6x + 3 \times 5 \\ = 6x + 15[/tex]
[tex]m(3n - 8) \\ = 3mn - 8[/tex]
[tex]4x {}^{2} (6x {}^{3} - 2x + 7) \\ 4x {}^{2} \times 6x {}^{3} - 4x {}^{2} \times 2x + 4x {}^{2} \times 7 \\ 24x {}^{5} - 4x {}^{2} \times 2x + 4x {}^{2} \times 7 \\ 24x {}^{5} - 8x {}^{3} + 4x {}^{2} \times 7 \\ = 24x {}^{5} - 8x {}^{3} + 28x {}^{2} [/tex]
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