Предмет: Алгебра, автор: valeriyparubets2005

Коренями рівняння х2-15х+56=0 є числа:

а)7 і -8 ; б) -7 і 8; в) 7і 8 ; г) -7 і -8

Ответы

Автор ответа: galinakir95
1

Ответ:

Х2-15х+56=0

Д=225-224=1

Х1=15+1/2=8

Х2=15-1/2=7

Ответ в

Объяснение:

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