Question

Выражение: а) аb^2\5c*2c^3\a^2b б) а+b\2ab: n-2m\m^2n^2 в) (10a^2bc^3)^2*(2c\5ab^2)^3

Answer 1

$\frac{ab^{2} }{5c} *\frac{2c^{3} }{a^{2} b}=\frac{2bc}{5a} \\ \\ \frac{a+b}{2ab}:\frac{a+b}{8a^{2}b^{2} }= \frac{a+b}{2ab}*\frac{8a^{2}b^{2} }{a+b} =4ab\\ \\ (10a^{2}bc^{3} )^{2}*(\frac{2c}{5ab^{2} } )^{3}=\frac{800a^{4}b^{2}c^{9}}{125a^{3}b^{6} } =\frac{32ac^{9} }{5b^{4} }$