Предмет: Алгебра, автор: svetavavilova

Решите, пожалуйстааа
х-5√х-6=0

Ответы

Автор ответа: kmike21
0
заметим, что x>=0
заменим √x=y
y²-5y-6=0
D=5²+4*6=25+24=49
√D=7
y1=(5-7)/2=-1 отбрасывает
y2=(5+7)/2=6
x=y²=6²=36
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