realiza estos productos ( 2x2+x+1) •(x-3)
[tex](2 \times {}^{2} + \times + 1) \times( \times - 3) \\ [/tex]
[tex](3 \times {}^{3} - \times {}^{2} + 3) \times (2 \times + 1)[/tex]
[tex]( { \times }^{2} + 11) \times ( \times - 11)[/tex]

[tex](3zt - 2 {t}^{2} ) \times (tz - {z}^{2} )[/tex]
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