[tex]2x(3x-1) = 6 x^{2} -2x[/tex]
[tex](4a ^{5} )(1-2 a^{2} ) = 4 a^{5} -8a ^{7} [/tex]
[tex] x^{3} (4 x^{2} +3 x^{6}) = 4 x^{5} +3 x^{9} [/tex]
[tex]3 m^{2} (2+3 m^{2} -4 x^{4}) = 6 m^{2} + 9 m^{4} - 12 m^{6} [/tex]
[tex]-4ab( b^{4} -5 a^{2} ) =-4ab^{2} + 20 a^{2} b[/tex]
[tex](5pq) (1+ 5 p^{2} q^{3} ) = 5pq+25 p^{3} q ^{4} [/tex]
[tex] x^{5} (7-16 x^{4}) = 7 x^{5} - 16 x^{9} [/tex]
[tex]2mn (3m-4n+5mn) = 6 m^{2} n - 8m n^{2} + 10 m^{2} n^{2} [/tex]
[tex] x^{2} (12x+7)=12 x^{3}+7 x^{2} [/tex]
[tex]3 x^{3}(2 x^{2} - y^{2} )=6 x^{5}-3 x^{3} y ^{2} [/tex]
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