Các câu hỏi tương tự
1.tìm x biết:
a) \(2x-17=3^5:3^2\)
b) \(\left(19-x\right).2-20=2^3\)
c) \(2.\left(1+3+3^2+3^3+...+3^x\right)+1=81\)
Tìm x biết :
a) \(x.\left(-\frac{2}{3}\right)^4=\left(\frac{-2}{3}\right)^7\) b)\(x:\left(\frac{3}{5}\right)^2=\left(\frac{3}{5}\right)^5\) c)\(\left(2x-1\right)^4=81\)
d)\(\left(x-1\right)^7=-128\) e)\(x^6+x^4=0\)
\(\left(x-1\right)\left(x+1\right)+2=0\)
\(\left(x+1\right).\left(3-x\right)=0\)
\(\left(2-x\right)^4=81\)
\(\left(x^2+1\right).\left(81-x^2\right)=0\)
Tìm x, biết
a, \(\left(\frac{12}{21}\right)^x=\left(\frac{3}{5}\right)^2-\left(-\frac{3}{5}\right)^4\)
b, \(\left(-\frac{3}{4}\right)^{3x-1}=\frac{256}{81}\)
Help me!!!
1.Tính
a)-1+4-7+10-13+16-...-97+100-103
b)\(\frac{7\cdot\left(27^8-2\cdot9^{11}\right)}{3\cdot\left(81^6-6\cdot13^9\right)}\)
2.Tìm x
(!x!+5).(x2-81)=0
Chú ý ! là giá trị tuyệt đối
Tìm x
\(23+3X=5^6\div5^3\)
\(\left(X-6\right)^2=9\)
\(3^{\left(X+3\right)}=81\div1)\left(2X-5\right)^3=8\)
Tìm số tự nhiên x , biết
\(2\cdot\left(x-1\right)^2=8\)
\(\left(2x+1\right)^3=125\)
\(\left(x-2\right)^5=243\)
\(5\left(x-4\right)^2-7=13\)
\(221-\left(3x+2\right)^3=96\)
tìm các số tự nhiên x,y biết rằng:\(\left(2^x+1\right).\left(2^x+2\right)\left(2^x+3\right)\left(2^x+4\right)-5^y=11879\)
Tìm số nguyên x , biết
\(10\) ⋮ \(\left(x-1\right)\)
\(b.\left(x+5\right)\) ⋮ \(\left(x-2\right)\)
c. \(\left(3x+8\right)\) ⋮ \(\left(x-1\right)\)