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\(A=\left(0,125\right)^{102}\cdot8^{104}\)
\(A=\left(0,125\right)^{102}\cdot\left(0,125\cdot8\cdot8\right)^{104}\)
\(A=\left(0,125\right)^{102}\cdot\left(0,125\cdot2\right)^{624}\)
\(A=\left(0,125\right)^{102+624}\cdot2\)
\(A=\left(0,250\right)^{826}\):)))))
a) \(\left|-7\right|+8=7+8=15\)
b) \(\left|-7,5\right|+\left|-2,5\right|=7,5+2,5=10\)
c) \(-\left|3,5\right|+\left|5,5\right|-\left|6\right|=-3,5+5,5-6=-4\)
d) \(\left|11,4-3,4\right|+\left|12,4-15,5\right|=\left|8\right|+\left|-3,1\right|=8+3,1=11,1\)
a)|-7|+8=7+8=15
b)|-7,5|+|-2,5|=7,5+2,5=10
c)-|3,5|+|5,5|-|-6|=-3,5+5,5-6=-4
d)|11,4-3,4|+|12,4-15,5|=8+3,1=11,1
S= 1+0,5+0,25+0,125+0,0625+0,03125
S=1+1/2+1/4+1/8+1/16+1/32
2S=2+1+1/2+1/4+1/8+1/16
2S-S= (2+1+1/2+1/4+1/8+1/16) - (1+1/2+1/4+1/8+1/16+1/32)
S= 2-1+1-1/2+1/2-1/4+1/4-1/8+1/8-1/16+1/16-1/32
S=2 - 1/32
S= 63/32
a/ \(\left(-2,5.0,38.0,4\right)-\left[0,125.3,15.\left(-8\right)\right]\)
\(=\left(-0,95.0,4\right)-\left[0,39375.\left(-8\right)\right]\)
\(=-0,38-3,15=2,77\)
b/ \(\left[\left(-20,83\right).0,2+\left(-9,17\right).0,2\right]:\left[2,47.0,5-\left(-3,53\right).0,5\right]\)
\(=\left[-4,166+-1,834\right]:\left[1,235--1,765\right]\)
\(=-6:3\)
\(=-2\)
a) |x-1,5| + |2,5 - x| = 0
TH1: x-1,5-2,5-x=0
<=>-4=0(vô lý)
TH2: 1,5-x-2,5-x=0
<=>-1-2x=0
<=>2x=-1
<=>x=-1/2
Vậy x=-1/2
b) 0,4 : x = x : 0,9
\(\Rightarrow\frac{0,4}{x}=\frac{x}{0,9}\Leftrightarrow x^2=0,4\cdot0,9=\frac{9}{25}\Leftrightarrow x=\left(\frac{3}{5}\right)^2\)
Vậy x=3/5