Многочлен, записав каждый его член в стандартном виде 5,5xy3⋅(-8)xyz−5,16mn⋅7m7n.

выбери правильный ответ:
1)-44xy3xyz−36,12mnm7n
2)другой ответ
3)-44x2y4z−36,12m8n2
4)5,5x2y4⋅(-8)z−5,16m8⋅7n2

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Ответ:

Lovetoo

09.06.2020 03:12

Басты бет

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Healthy habits

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АҒЫЛШЫН ТІЛІ - 6 Ә

HEALTHY HABITS

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Healthy habits

We like jogging in the park.

Jogging is running at a slow, steady pace.

Unhealthy habits

He spends too much time watching TV.

I sleep eight hours.

Sam sleeps only five hours.

I do fitness in the gym.

Sam plays video games too much.

I eat only healthy food.

Ted eats fast food.

Some tips for healthy habits.

1.Visit the dentist twice a year.

2.Brush your teeth twice a day.

3. Be active. Don’t be a couch potato.

A couch potato is a person who takes little or no exercise and watches a lot of television.

4.Spend a lot of time outdoors.

5.Don’t eat before going to bed.

6.Eat dairy products (milk, yogurt, butter, cheese, cream) every day.

How to write a good story? Sentence starters will help you write a story.

One day ………

Last week.., Yesterday ..…

On a……….day

Once upon a time..

sentence starters to begin introduction

I think……is…because……

There are many reasons why……

Firstly, Secondly, Thirdly……

In addition……

sentence starters to write the details

Now you know why………is…

As you can see……

Finally……………

In conclusion……….

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Объяснение:

100% не правильно

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Ответ:

2006zahar2006

17.02.2020 02:39

4х²=2х-3
4х²-2х+3=0
D=(-2)²-4×4×3=4-48=-44 D<0, уравнение не имеет корней
----------------------------------------------------------------------------
5х²+26х=24
5х²+26х-24=0
D=26²-4×5×(-24)=676+480=1156 D>0
х₁= $\frac{-26+ \sqrt{1156} }{2*5}= \frac{-26+34}{10} = \frac{8}{10}=0,8$
х₂= $\frac{-26- \sqrt{1156} }{2*5}= \frac{-26-34}{10}= \frac{-60}{10}=-6$
х₁=0,8
х₂=-6
-------------------------------------------------------------------------
3х²-5х=0
D=5²-4×3×0=25-0=25 D>0
х₁= $\frac{-(-5)+ \sqrt{25} }{2*3}= \frac{5+5}{6}= \frac{10}{6}=1,667$
х₂= $\frac{-(-5)- \sqrt{25} }{2*3}= \frac{5-5}{6} \frac{0}{6}=0$
х₁=1,667
х₂=0
--------------------------------------------------------------------
6-2х²=0
-2х²+6=0
D=0²-4×(-2)×6=0+48=48 D>0
х₁= $\frac{-0+ \sqrt{48} }{2*(-2)} = \frac{-0+6,928}{-4}=-1,732
$
х₂= $\frac{-0- \sqrt{48} }{2*(-2)}= \frac{-0-6,928}{-4}= \frac{-6,928}{-4}=1,732$
х₁=-1,732
х₂=1,732
------------------------------------------------------------------
t²=35-2t
t²+2t-35=0
D=2²-4×1×(-35)=4+140=144
t₁= $\frac{-2+ \sqrt{144} }{2*1}= \frac{-2+12}{2}= \frac{10}{2}=5$
t₂= $\frac{-2- \sqrt{144} }{2*1}= \frac{-2-12}{2}= \frac{-14}{2}=-7$
t₁=5
t₂=-7

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