Question

Помогите решить уравнение!!!!! (1/2х+1/3у+1/4z)×(1/3х-1/2у-1/4z)=

Answer 1

Объяснение:

$( \frac{1}{2} x + \frac{1}{3} y + \frac{1}{4} z)( \frac{1}{3} x - \frac{1}{2} y - \frac{1}{4} z) =$

$= \frac{1}{2} x( \frac{1}{3} x - \frac{1}{2} y - \frac{1}{4} z) + \frac{1}{3} y( \frac{1}{3} x - \frac{1}{2} y - \frac{1}{4} z) + \frac{1}{4} z( \frac{1}{3} x - \frac{1}{2} y - \frac{1}{4} z ) =$

$= \frac{1}{6} {x}^{2} - \frac{1}{4} xy - \frac{1}{8} {x}^{2} + \frac{1}{9} xy - \frac{1}{6} {y}^{2} - \frac{1}{12} yz - \frac{1}{8} yz - \frac{1}{16} {z}^{2} =$

$= \frac{1}{6} {x}^{2} - \frac{5}{36} xy - \frac{1}{24} xz - \frac{1}{6} {y}^{2} - \frac{5}{24} yz - \frac{1}{16} {z}^{2}$