I.- Multiplicación

190.191.
\large 5a^{2}\; .\; 4\large 12a^{3}b^{2}\; .\; 4
192.193.
\large 15x^{2}\; .\; 7\large 8ab\; .\; c
194.195.
\large -5a^{2}\; .\; 3b\large 12x^{2}y\; .\; 5z
196.197.
\large 10a^{2}b^{2}\; .\; 4c^{3}\large b^{3}\; .\; b^{2}
198.199.
\large 2a^{2}\; .\; 5a^{4}\large 3x\; .\; 8x^{3}
200.201.
\large a^{3}\; .\; a\; .\; a^{4}\large b\; .\; b^{2}\; .\; b^{3}
202.203.
\large x\; .\; x^{2}\; .\; x^{3}\; .\; x^{4}\large 4x^{m}\; .\; 8
204.205.
\large 3a^{m}b^{n}\; .\; 5\large 5x^{2n}\; .\; 2y^{m}
206.207.
\large x^{2}y\; .\; xy^{2}z\large 6ab^{2}\; .\; 5a^{2}c
208.209.
\large 12x^{2}z^{3}\; .\; 4xy^{2}\large 5x^{2}y\; .\; 2xyz
210.211.
\large 4a^{3}b^{2}\; .\; 3a^{2}bc^{2}\large 8x^{2}y\; .\; (-4xy^{2})
212.213.
\large (-3ab)\: .\; 2a^{2}b^{3}\large (-5xy^{3})\: .\: (-12x^{2}y)
214.215.
\large ab^{2}\: .\: a^{2}b^{3}\; .\; a^{3}b\large 3x^{2}\: .\: 5xy^{2}\: .\: 4xy
216.
\large 3x^{2}\: .\: 5xy^{2}\: .\: 4xy
217.
\large 6x^{2}y^{2}(-5xy^{2})(-3x^{3}y^{4})
218.
\large 8a^{3}b^{2}c(2a^{2}b^{3})(-5ac^{2})
219.
\large (-8x^{2}y)(-4axy^{2}) \large (3aby^{3})(-2bxy)
220.
\large (-5a^{2}y)(-4by^{2}) \large (-3abx^{2})(-2x^{2}y^{2})
221.222.
\large ac^{2}(\frac{3}{4}\: ab^{2}c)\large x^{2}y(\frac{2}{5}\: x^{3}y^{2})
223.224.
\large \frac{1}{2}\: a^{2}b(\frac{3}{4}\: a^{2}b^{5})\large \frac{3}{4}\: a^{2}b(8a^{3}b^{2})
225.
\large \frac{2}{5}\: x^{3}y^{2}\: .\: \frac{5}{7}\: x^{2}y
226.
\large \frac{4}{3}\: a^{3}b^{2}c\: .\: 2a^{2}bc
227.
\large \frac{3}{4}\: ab^{2}\: .\: \frac{4}{5}\: b^{3}c\: .\: \frac{5}{3}\: ac
228
\large \frac{2}{3}\: x^{2}\: .\: \frac{4}{5}\: ay^{2}\: .\: \frac{3}{2}\: x^{2}y^{2}
229.
\large \frac{3}{4}\: a^{2}b\: .\: (-4ab^{2})\: .\: 2ax
230.
\large 3ab^{2}x^{2}.(-7ab).(-4a^{3}x).\frac{2}{5}abx
231.
\large \frac{2}{3}x^{2}yz^{3}.\frac{9}{10}y^{3}z \large .\frac{5}{4}xy^{2}z^{2}
232.
\large (x^{2}-y^{2})xy^{3}
233.
\large (2a^{2}-3ab+b^{2}).3a^{3}b
234.
\large -ax(-6x^{3}+4x^{2}y-xy^{2})
235.
\large (-xy)(x^{3}y^{3})
236.
\large 2xy(4xy-2x+3z)
237.
\large (-6x^{2}y^{3}z). \large (-3x^{3}y^{2}+5x^{2}y-4x)
238.
\large (4x^{3}z^{2}-3x^{2}a^{5}+6yza^{4}). \large (-5x^{7}a^{6}z)
239.
\large (m^{3}-3m^{2}n+3mn^{2}-n^{3}). \large (4m^{2}n^{2})
240.
\large (5a^{2}b-\frac{3}{4}a^{2}b^{2})8ab
241.
\large (5x^{3}-\frac{2}{3}x^{2}y+\frac{3}{4}xy^{2}-\frac{1}{5}y^{3}). \large (\frac{3}{5}x^{2}y^{2})
242.
\large (\frac{2}3{}ax^{3}-\frac{3}{5}bx^{2}+\frac{4}{7}cx+\frac{1}{2}d) \large (\frac{3}{4}a^{2}bx^{2})
243.
\large (x^{2}-2xy+y^{2})(x-y)
244.
\large (x^{4}+x^{2}y^{2}+y^{4})(x^{2}-y^{2})
245.
\large (3a^{2}x-5y^{3})(3a^{2}x+5y^{3})
246.
\large (2x^{2}-x-1)(4xy-3y)
247.
\large (2x^{2}+3x-1)(2x^{2}-3x-1)
248.
\large (5x^{4}y^{3}+3x^{3}y^{4}-2x^{2}y^{5}) \large (x^{2}-y^{2})
249.
\large (x^{m}+x^{m-1}y+x^{m-2}y^{2}+...+y^{m}) \large (x-y)
250.
\large (5xy+3xz-z^{2}) \large (-xy+3xz+x^{2})
251.
\large (7a^{2}-3a^{2}b-ab^{2}) \large (2a^{2}-3ab+2b^{2})
252.
\large (2x^{3}-3x^{2}y-5xy^{2}+y^{3}) \large (4x^{2}-7xy+3y^{2})
253.
\large (4x^{4}-5ax^{3}+3a^{2}x^{2}-2a^{4}) \large (3a^{2}x^{3}-5a^{3}x^{2}-3a^{5})
254.
\large (\frac{2}{3}x^{2}-\frac{5}{6}xy+\frac{1}{5}y^{2}) \large (\frac{3}{4}x^{2}+\frac{3}{2}xy-\frac{5}{3}y^{2})
255.
\large (\frac{1}{4}a^{2}+\frac{3}{5}ab-6b^{2}) \large (\frac{5}{3}a^{2}-2ab+\frac{1}{3}b^{2})
256.
\large (\frac{1}{4}a^{2}+\frac{3}{5}ab-6b^{2}) \large (\frac{5}{3}a^{2}-2ab+\frac{1}{3}b^{2})

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