Question

Найдите разность $frac{28x^2}{7x-7} -4x$

Answer 1

( 28X^2 - 4X * ( 7X - 7)) / ( 7X - 7) =
= (28X^2 - 28X^2 + 28X ) / ( 7X - 7 ) =
= 28X / ( 7 * ( X - 1 ) = 
= 4X / ( X - 1 )
 Ответ 4Х / ( Х - 1 )