Pré-Vestibular ⇒ Divisão e multiplicação - UNIFOR

[barbarahass]

Efetuando-se [tex3]\frac{3x^{2}y^{2}}{10a^{2}b^{5}}.\frac{5a^{3}b^{4}}{6xy^{3}}:\frac{7a^{5}y}{4xy^{2}}[/tex3], em que [tex3]a.b.x.y\neq0[/tex3], obtém-se:

a) [tex3]\frac{x^{2}}{7a^{4}b}[/tex3]

b) [tex3]\frac{7a^{6}}{16by^{2}}[/tex3]

c) [tex3]\frac{x^{3}}{7b^{5}}[/tex3]

d) [tex3]\frac{16ab}{7y^{2}}[/tex3]

[Karl Weierstrass]

[tex3]\Large\frac{\not{3}x^{\not{2}}\not{y^2}}{\not{10}_2\not{a^2}b^{\not{5}}}
\large\cdot\Large\frac{\not{5}a^{\not{3}}b^{\not{4}}}{\not{6}_2\not{x}y^{\not{3}}}\large\cdot\Large\frac{4xy^{2}}{7a^{5}y}\large=
\Large\frac{\not{a}x}{\not{4}b\not{y}}\large\cdot\Large\frac{\not{4}x\not{y^2}}{7a^{\not{5}}\not{y}}\large=\Large\frac{x^2}{7a^4b}[/tex3]






[tex3]\,[/tex3]