Предмет: Алгебра, автор: бекш

При каком значении n уравнение имеет только один корень.

№1.3x^2+nx+5=0

№2. x^2+nx+6=0

Ответы

Автор ответа: 555Зайка555
0

Он может вообще не иметь корней,если дискрименат отрицательный,или один корень: если когда корень будет равен 0 или отриц.а другой положительный

Автор ответа: ИЛЮХА19
0

Квадратное уравнение имеет один корень если дискриминант равен 0, следовательно:

1) n^2-4*3*5 =0

    n^2=60

    n= +- корень из 60

2)n^2-4*1*6=0

n= +- корень из 24

Ответ +- корень из 60 и 24

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PAST SIMPLE and PAST PERFECT


SIMPLE PAST TENSE


We use Simple Past Tense to express action or


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Henry painted the fence all day long yesterday.


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PAST PERFECT TENSE


We use Past Perfect Tense to express that an


action or actions happened before something


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before she went to bed


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he visited the museum with his friends


when the earthquake happened, we


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we went to the cinema last Wednesday


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for 30 years when she got retired last year.


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The robbers left handle the bank when the policemen finally arshad arrived


L


2. When the rain started had started the Atkinsons in the planting trees


3. By the time Rebecca went hade into the store the que el


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accident on the highway about a year ago


I didn't think the house before seen that ad on TV.


10. My unde in t hat tried to food before we had gone to that restaurant


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