a) \(x:\left(\frac{3}{4}\right)^3=\left(\frac{3}{4}\right)^2\)
⇒ \(x=\left(\frac{3}{4}\right)^2.\left(\frac{3}{4}\right)^3\)
⇒ \(x=\left(\frac{3}{4}\right)^{2+3}\)
⇒ \(x=\left(\frac{3}{4}\right)^5\)
Vậy \(x=\left(\frac{3}{4}\right)^5.\)
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1. Tìm các số nguyên x,y biết :
a) \(^{3^{4-x}}\)-x = 2
b)3^-1.4^x + 3.4^x = \(\dfrac{5}{3}\).\(^{2^7}\)
Tìm x biết:
a) \(x:\left(-\dfrac{1}{2}\right)^3=-\dfrac{1}{2}\); b) \(\left(\dfrac{3}{4}\right)^5.x=\left(\dfrac{3}{4}\right)^7\)
Tìm x biết
a) 2/3+ 7/4 : x = 5/6
b) (x + 5/3) . (x - 5/4)= 0
c) (x- 1,2)^2 = 4
d) (x +1)^3 = -125
1. Tìm số nguyên x, y biết:
a) \(^{3^{4-x}}=27\)
b) \(^{3^{-1}}.^{4^x}+3.^{4^x}=\dfrac{5}{3}.^{2^7}\)
tìm x biết
a)3/4+1/4:x=2/5
b)x/-2=-8/x(x khác 0)
c)(x-1)/5=20/x-1
d)(x-3/5)^2=4
Tìm x biết
a) (x-1/4)^2=4/9
b)( x+0,7)^3=-8
c) 2^x+2^x+3=144
d) 5-2:|x-2|=1
Tìm x biết : a)\(1-\dfrac{1}{2}.\left(\dfrac{3}{2}-2.x\right)=4.x-\dfrac{1}{4}\) b):\(x^{10}=1024\) c) 3x = 81
Tìm x biết:
1)25/12x+11/15=9/10
2)3/2x-2/5=1/3x-1/4
3)29/12[x]-5/6=3/8
4)[4x+3/4]-5/4=2
5)2x+2x+3=144
Câu 1: Tìm x biết:
a)x : (2/3)4 = 2/3
b) (-5/3)2 . x = (-5/3)3
c) x2 -0.25 = 0
