Help you solve math:mày cũng hay tự còn nói ai,không biết nhục à

I agree with Lê Quốc Trần Anh'opinion

The form of the number to find is:abcba

Because abcba divided 5 residual 2 and abcba is the smallest

So a is the smallest and a divided 5 residual 2 so a=2

Because b,c are the smallest so a=b=0

So the number to find is:20002

Put the number to find is:a

We have:a divided 7 residual 3 so put a=7k+3 (k\(\in N\))   \(\Rightarrow a+39=7k+42⋮7\)

               a divided 4 residual 1 so put a=4m+1 \(\left(m\in N\right)\) \(\Rightarrow a+39=4m+40⋮4\)

               a divided 3 residual 0 so put a=3n\(\left(n\in N\right)\) \(\Rightarrow a+39=3n+39⋮3\)

So a+39\(\in BC\left(7,4,3\right)\) .Because a+39 is the smallest so a+39=\(BCNN\left(3,7,4\right)=84\)

\(\Rightarrow a=45\)

Answer:the number to find is 45

We have:\(\left\{{}\begin{matrix}a+2b=11\\a-b=-4\end{matrix}\right.\)\(\Rightarrow\left(a+2b\right)-\left(a-b\right)=11-\left(-4\right)\Rightarrow3b=15\Rightarrow b=5\)

\(\Rightarrow a=b-4=5-4=1\)\(\Rightarrow4a-b=4.1-5=-1\)

We have:P-4=\(\dfrac{3x^2+6x+11-4\left(x^2+2x+3\right)}{x^2+2x+3}\)

=\(\dfrac{3x^2+6x+11-4x^2-8x-12}{x^2+2x+3}\)\(=\dfrac{-x^2-2x-1}{x^2+2x+3}=\dfrac{-\left(x+1\right)^2}{x^2+2x+3}\le0\)

\(\Rightarrow P\le4\).So max_A=4 when x=-1

Other way:

P-\(5\)=\(\dfrac{3x^2+6x+10-5x^2-10x-15}{x^2+2x+3}=\dfrac{-2x^2-4x-5}{x^2+2x+3}=\dfrac{-2\left(x^2+2x+3\right)+1}{x^2+2x+3}\)

\(=-2+\dfrac{1}{\left(x+1\right)^2+2}\le-2+\dfrac{1}{2}=-\dfrac{3}{2}\)

\(\Rightarrow P\le\dfrac{-3}{2}+5=\dfrac{7}{2}\)

\(\Rightarrow max_P=\dfrac{7}{2}\).When x=-1

Dao Trong Luan:1=0²+1;2=1²+1;5=2²+1;.....8th=7²+1=50

P/s:Cho em nói tiếng việt

Dao Trong Luan:Có sai nhưng vẫn châm chước được

KEITA FC 8C:You are wrong

a²-3ab²+2b²=a(a²-b²)+2b²(b-a)..........You are very stupid

KEITA FC 8C : Bạn sai.

một ² -3ab ² + 2b ² = a (a ² -b ² ) + 2b ² (ba) .... Bạn rất ngu ngốc

The total of the books on the bookshelf is:

  6+3+7=16(books)

So the answer is:\(\dfrac{3+7}{16}=\dfrac{10}{16}=\dfrac{5}{8}\)

The bottom of the triangle is:

\(\dfrac{120.2}{10}=24\)(mm)

The area of a similar triangle with a height of 20mm is:
  \(\dfrac{24.20}{2}=240\)(mm²)

Answer:240 mm²

The grapes are not rẻd accounting for:

  100%-20%=80%(the number of the grapes)

The number of the grapes are not red is:

  50 x 80%=40(grapes)

         Answer:40 grapes

S_ABCD=\(\left(\dfrac{3}{2}.w+\dfrac{w}{2}\right).w=\dfrac{4}{2}.w^2=2w^2\)

Draw FK perpendicular with CD.We have:AD=FK

So S_DEF=\(\dfrac{w.\dfrac{3}{2}w}{2}=\dfrac{3}{4}.w^2\)

So the answer is:\(\dfrac{S_{ABCD}}{S_{DEF}}=\dfrac{2.w^2}{\dfrac{3}{4}.w^2}=\dfrac{2}{\dfrac{3}{4}}=\dfrac{8}{3}\)

Dao Trong Luan:AM-GM ? I am not study yet so I wish you can do it equal another way

Dao Trong Luan:The maximum,minimum is happened when...........

Trần Quỳnh Anh:If n=1 then A=3 is a prime

Applying theorem Pitago in MQR triangle we have:

\(MQ^2+QR^2=MR^2\Rightarrow\left(PQ-PM\right)^2+9^2=MR^2\)

\(\Rightarrow\left(12-MR\right)^2+9^2=MR^2\Rightarrow12^2-24.MR+MR^2+9^2=MR^2\)

\(\Rightarrow24.MR+MR^2-MR^2=12^2+9^2\)

\(\Rightarrow24.MR=225\Rightarrow MR=\dfrac{225}{24}=PM\)

\(\Rightarrow MQ=PQ-PM=12-\dfrac{225}{24}=\dfrac{21}{8}\)

Help you solve math,I Math English:2 nick but they were used by 1 user.

I suggested Math You  should have a solution for this.