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a: \(A=25+125=150\)
b: \(B=16+64=80\)
c: \(C=32+9+1=33+9=42\)
d: \(D=1+8+27=35+1=36\)
g: \(K=11\cdot3^{29}-\dfrac{3^{30}}{4\cdot3^{28}}=11\cdot3^{29}-\dfrac{9}{4}\)
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a, \(A=2015.20162016-2016.20152015\)
\(A=2015.\left(2016.10001\right)-2016.20152015\)
\(A=\left(2015.10001\right).2016-20152015.2016\)
\(A=20152015.2016-20152015.2016\)
\(A=0\)
Vậy A = 0
b, \(B=\left(3.4.2^{16}\right)^2\div11.2^{13}.4^{11}-16^9\)
\(B=3^2.2^4.2^{32}\div11.2^{13}.\left(2^2\right)^{11}-\left(2^4\right)^9\)
\(B=3^2.2^4.2^{32}\div11.2^{13}.2^{22}-2^{36}\)
\(B=3^2.2^{36}\div11.2^{35}-2^{36}\)
\(B=3^2.2^{35}.2\div11.2^{35}-2.2^{35}\)
\(B=3^2.2\div9=9.2\div9=2\)
Vậy B = 2
c, \(C=2^{10}.13+2^{10}.65\div2^8.104\)
\(C=2^{10}.\left(13+65\right)\div2^8.104\)
\(C=2^{10}.78\div2^8.104\)
\(C=2^{10}.39\div2^8.13\)
\(C=39\div13=3\)
Vậy C = 3
Đề bài câu c sai mk sửa nhé là 28 ms tính đc k nó dư lắm !!!
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Viết kq lun nha
a)8;16;32;64;128;256;512;1024
b)9;27;81;243
c)16;64;256
d)25;125;625
e)36;216;1296
a,8,16,32,64,128,256,512,1024
b,9,27,81,243
c,16,64,256
e,36,216,1296
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Gọi A là biểu thức ta có:
CÂU1 :A = 1.2+2.3+3.4+......+99.100
3A = 1.2.3 + 2.3.3 + 3.4.3 + … + 99.100.3
3A = 1.2.3 + 2.3.(4 - 1) + 3.4.( 5 - 2) + … + 99.100. (101 - 98)
3A = 1.2.3 + 2.3.4 - 1.2.3 + 3.4.5 - 2.3.4 + … + 99.100.101 - 98.99.100
3A = 99.100.101
A = 99.100.101 : 3
A = 33.100.101
A = 333 300
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a) \(2^3=8\) c) \(3^2=9;3^3=27;3^4=81;3^5=243\) còn các câu kia cũng z chứ dài quá !!bn ơi mik làm ko hết nhưng k giúp mik nhak
\(2^4=16\)
\(2^5=32\)
\(2^6=64\)
\(2^7=128\)
\(2^8=256\)
\(2^9=512\)
\(2^{10}=1024\)
mấy câu đầu bn lấy mt mak bấm
E = 2 + 2^2 + 2^3 + 2^4 + ...+ 2^100
=> 2E = 2^2 + 2^3 + 2^4 + 2^5 + ...+ 2^101
=> 2E-E = 2^101 - 2
E = 2^101 - 2
\(A=3^2.3^3+2^3.2^2=3^5+2^5=275\)
\(B=3.4^2-2^{2.3}=3.16-2^5=48+32=80\)
\(C=2^{10}-2=1024-2=1022\)
D tự làm nhé
\(E=2+2^2+2^3+...+2^{100}\)
\(2E=2^2+2^3+...+2^{101}\)
\(2E-E=E=2^{101}-2\)