\(x+\dfrac{1}{2}=2^5:2^5\\ \Rightarrow x+\dfrac{1}{2}=1\\ \Rightarrow x=1-\dfrac{1}{2}\\ \Rightarrow x=\dfrac{1}{2}\)
x+\(\dfrac{1}{2}=1\)
x=1-\(\dfrac{1}{2}\)
x=\(\dfrac{1}{2}\)
\(x+\dfrac{1}{2}=2^5:2^5\\ \Rightarrow x+\dfrac{1}{2}=1\\ \Rightarrow x=1-\dfrac{1}{2}\\ \Rightarrow x=\dfrac{1}{2}\)
x+\(\dfrac{1}{2}=1\)
x=1-\(\dfrac{1}{2}\)
x=\(\dfrac{1}{2}\)
a) 25 - y^2 = 8(x+2009)^2 \Leftrightarrow 8(x+2009)^2 + y^2 = 25
Do y^2 \geq 0 \Rightarrow (x+2009)^2 \leq 25/8
\Rightarrow x+2009 =0 hoặc 1
Nếu x+2009 = 1 \Rightarrow 25 - y^2 = 1\Rightarrow y^2 = 26 (không tìm được y)
Nếu x+2009 = \Rightarrow 25 - y^2 = 0\Rightarrow y^2 = 25, y=5
Vậy (x=0;y=5)
Ta có: 4x=5y => x/5=y/4=>x2/25=y2/16
ta có:
x2/25=y2/16=x2-y2/25-16=1/9
x^2/25=1/9=>x^2=25/9=>x=5/3
y^2/16=1/9=>y^2=16/9=>y=4/3
tích của chúng bằng:5/3*4/3=20/9
Tìm x , bt : [12/25 . ( 0.75 + 7/4 ) - 1 ] x = [1 và 2/5 - 3/25 . ( 10,6 - 3/5 )]
(12/25)^x=(5/3)^-2-(-3/5)^4
(12/25)^x=144/625
(12/25)^x=(12/25)^2
=>x=2
Cho x+16/9= y-25/16= z+9/25
Biết 2*x^3-1=15
Tìm x;y;z
Tính
(x + 1)2 - 10(x + 1) + 25
(x+1/5)^2+17/25=26/25
Mik đang cần gấp, giúp mình với !
so sánh
x=\(\frac{2^{23}+1}{2^{25}+1}\)và y=\(\frac{2^{25}+1}{2^{27}+1}\)
(x+1/3)^2=1/25