Question

Представьте в виде дроби a) 2a/51x6y * 17x7y б) 24b2c/3a6 : 16bc/a5 в) 5x+10/x-1 * x2-1/x2-4 г) y+c/ * (c/y - c/y+c)

Answer 1

$a) frac{2a}{17*3x^6y} *17x^7y= frac{2ax}{3}$

$b) frac{24b^2c}{3a^6}: frac{16bc}{a^5}= frac{8*3b*b*c*a^5}{3a*a^5*8*2bc}= frac{b}{2a}$

$B) frac{5x+10}{x-1}* frac{ x^{2} -1}{ x^{2} -4}= frac{5(x+2)}{(x-1)}* frac{(x-1)(x+1)}{(x-2)(x+2)}= \ \ frac{5(x+1)}{x-2}$

$g) frac{y+c}{c} ( frac{c}{y}- frac{c}{y+c})= frac{y+c}{c} *c( frac{y+c-y}{y(y+c)})=(y+c)( frac{c}{y(y+c)})= frac{c}{y}$