x-2/4=5+x/3 cach giai nha
1.Tìm x, y E N: 2^x + 57 = y^2
2.Tìm x E N: 3^x + 4^x = 5^x
Giai theo cach lop 7 nha
giup minh tim x va cach giai vs nha :2/3x(x+1)=4/5
(X^2-10 ):5=3 mn ghi cach giai ra giup em nha
\(\left(x^2-10\right):5=3\\ \Rightarrow x^2-10=3.5\\ \Rightarrow x^2=15+10\\ \Rightarrow x^2=25\\ \Rightarrow\left[{}\begin{matrix}x=-5\\x=5\end{matrix}\right.\)
(x2-10) : 5 = 3
⇔ (x2-10) = 3.5
⇔(x2-10) = 15
⇔x2 = 15 + 10
⇔x2 = 25
⇔x2 = 52
⇒x = 5
Vậy x = 5
Tim x:
x:2 phan 6=5/3:1/3
Ghi ca cach giai nha!
(/) nghia la phan
\(\frac{x:2}{6}=\frac{5}{3}:\frac{1}{3}\)
\(\frac{x:2}{6}=5\)
\(x:2=5.6\)
\(x:2=30\)
\(x=30.2=>x=60\)
nha bn
\(x\) : \(\frac{2}{6}\) = \(\frac{5}{3}\) : \(\frac{1}{3}\)
\(x\) : \(\frac{2}{6}\) = \(\frac{15}{3}\)
\(x\) = \(\frac{15}{3}\) x \(\frac{2}{6}\)
\(x\) = \(\frac{30}{18}\)
\(x\) = \(\frac{5}{3}\)
Dress \(x\) = \(\frac{5}{3}\)
tim x biet :x+5-7+1+5+8-9-1+2+4+5.4-4<98
giai cach lam ra nha
làm nhanh tớ đang cần gấp
(6.x-3^4).7^3=7^4
nho neu cach giai nua nha
(x+4/x^2-3x+2)+(x+1/x^2-4x+3)=2x+5/x^2-4x+3
ghi ca cach giai
Cho 2 da thuc :
P(x)=x^4+ax^2+1 va Q(x)=x^3 +ax+1
Hay xac dinh a de 2 da thuc tren co nghiem chung ( giai theo cach lop 7 nha )
Tim x biet:
a, |x-5|+x+3=16
b,|x-4|>x+2
c,||x+5|-4|=3
cach am nua nha
co cach lam minh moi tich