Предмет: Алгебра, автор: bazarovaegenij

х²+5х-14=0 .Помогите ришить квадратическое уровнение!!!?

Ответы

Автор ответа: WhiteNeko
0
D=5²-4*-14=25+56=81=9²
x1=-5+9/2=4/2=2
x2=-5-9/2=-14/2=-7
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