Question

Решите уравнения:|2-х|=7,|2-х|=0,|2-х|=-7

Answer 1

$a)|2-x|=7= textgreater 2-x=-7= textgreater 2+7=x= textgreater x=9\ |2-x|=7= textgreater 2-x=7= textgreater x=7-2= textgreater x=-5\\ b)|2-x|=0= textgreater x=0+2= textgreater x=2\\ c)|2-x|=-7......\ |2-x|=7= textgreater 2-x=-7= textgreater x=7+2= textgreater x=9\ |2-x|=7= textgreater 2-x=7= textgreater x=2-7= textgreater x=-5$