Giúp vs
K
Khách
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Những câu hỏi liên quan
NL
2
5 tháng 1 2017
10-(5-x)=30+(2x-3)
10-5+x=30+2x-3
5+x=27+2x
x-2x=27-5
-x=22
x=-22
PN
2
giúp mình vs
giúp mik vs
23 tháng 10 2021
\(8,\Rightarrow\left(x-\dfrac{1}{2}\right)^3=\dfrac{3}{8}-\dfrac{1}{2}=-\dfrac{1}{8}=\left(-\dfrac{1}{2}\right)^3\\ \Rightarrow x-\dfrac{1}{2}=-\dfrac{1}{2}\Rightarrow x=0\\ 11,\Rightarrow\left(x-2\right)\left(2-x\right)=33\left(-297\right)\\ \Rightarrow\left(x-2\right)^2=9801\Rightarrow\left[{}\begin{matrix}x-2=99\\x-2=-99\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=101\\x=-97\end{matrix}\right.\)
23 tháng 10 2021
8) \(\Rightarrow\left(x-\dfrac{1}{2}\right)^3+\dfrac{1}{2}=\dfrac{3}{8}\)
\(\Rightarrow\left(x-\dfrac{1}{2}\right)^3=-\dfrac{1}{8}\)
\(\Rightarrow x-\dfrac{1}{2}=-\dfrac{1}{2}\Rightarrow x=0\)
11) ĐK: \(x\ne2\)
\(\Rightarrow\left(x-2\right)\left(2-x\right)=-297.33\)
\(\Rightarrow-x^2+4x-4=-9801\)
\(\Rightarrow-\left(x-101\right)\left(x+97\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=101\left(tm\right)\\x=-97\left(tm\right)\end{matrix}\right.\)
7 tháng 11 2021
\(a,=-x^2+x+4x-4=\left(x-1\right)\left(4-x\right)\\ b,=x^2\left(x+y\right)-y^2\left(x+y\right)=\left(x-y\right)\left(x+y\right)^2\)
L
12 tháng 1 2022
Where is he?
Why is he sad?
What is that?
When is the exam?
Who is she?
Why is he happy?
Where are they?
Who is crying?
When is your birthday?
Who makes dinner?
Why are you running?
Where is Jack?
15 tháng 6 2023
4:
a: OA<OB
=>A nằm giữa O và B
=>OA+AB=OB
=>AB=2cm
b: AO<AC
=>O nằm giữa A và C
mà AO=1/2AC
nên O là trung điểm của AC
VIII.
1. Alice has sunburn because he was outside all day yesterday.
2. Some people say carving eggshells that is difficult and boring.
3. She is the most kind-hearted girl I have evet met.
4. Big Heart oganization has encouraged people to protect the environment.
5. Tuan finds playing table tennis interesting because best friends can play it with he.
IX.
1. Bn lm đúng r.
2. Lam is very good at Math.
3. Bn lm đúng r.
4. What about going swimming?
5.What a delicious birthday cake!
X.
Huong is a student in class 7A at Quang Trung school. Collecting glass bottles is one of her favourite hobbies. She started her hobby when ahe was ten years old. She often shares het hobby with het sister. She finds her hobby interesting and useful. She feels very happy when she looks at the beautiful flower vases shes makes them. She will continue her hobby in the future because it helps save the environment.