tim gia tri cua x : 0,7516 : x=(9/16)8
Tim x, so ngoai ty, trung ti
a, 3 : (9/4) = 3/4 : (6*x)
b, 4,5 : 0,3 = (5*0,09) : (0,01 * x)
d, (1/9 * x) = 7/4 : 2/25
e, -2/x= -x/8/25
Tim Max :
E = \(\dfrac{4\left|x\right|+9}{\left|x\right|+1}\)
F = \(\dfrac{2\left|x\right|+8}{3\left|x\right|+1}\)
Tìm x
1) \(\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{8}\right)^6\) 2) \(\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{8}\right)^{36}\) 3) \(\left(\dfrac{1}{81}\right)^x=\left(\dfrac{1}{27}\right)^4\)
4) \(\left(\dfrac{4}{9}\right)^x=\left(\dfrac{8}{27}\right)^{10}\) 5) \(2^x=4^5.4^3\) help me !!!!
tim x:(x+1)^2/8=8/x+1
Cho \(\dfrac{x+16}{9}=\dfrac{y-25}{16}=\dfrac{z+9}{25}và\dfrac{9-x}{7}+\dfrac{11-x}{9}=2\).Tìm x+y+z
tim nghiem da thuc 4x+9 , -5x+6 , x^2-1 , x^2-9 , x^2-x , x^2-2x , x^2-3x , 3x^2-4x
tim x :
(x+\(\dfrac{1}{2}\))\(^4\)=\(\dfrac{16}{81}\)
Tìm nghiệm của đa thức sau:A=x^2-9
B=(x-3)(16-4x)
C=(2x-1)(3-x)
D=2.(x-3)-4x-8
E=2x-4(x-8)
F=x^2+7x-8
J=5x^2+9x+4
Q=x^2-5x+6
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