Предмет: Алгебра, автор: milan4eg72

ПОМОГИТЕ С АЛГЕБРОЙ ПОЖАЛУЙСТА

Приложения:

Ответы

Автор ответа: Минаханум

Ответ:

1-4

2-2

3-3

4-1

Объяснение:

1) t2-13t+42=0

D=169-4*42=1

t1=13+1/2=7

t2=13-1/2=6

2) z2-z-42=0

D=1-4*(-42)=169

z1=1-√169/2=-6

z2=1+√169/2=7

3) x2+13x+42=0

D=169-4*42=1

x1= -13+1/2=-6

x2= -13-1/2=-7

4) p2+p-42=0

D=1-4*(-42)=169

p1=-1+13/2=6

p2=-1-13/2=-7

дискриминант грех не знать)

milan4eg72: та в россии живем, карантин, синькавирус) школы нет, репетитора тоже на время пришлось забыть. нифига не понимаю :)

Минаханум: эх, бедные) но все же, эту тему пропускать нельзя, она до конца школы будет встречаться))

Минаханум: удачи)

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