bloom34
bloom34 bloom34
  • 08-09-2018
  • Mathematics
contestada

write
[tex] {8}^{3} \div {4}^{3} \times {2}^{5} [/tex]
as a single power of 2 .


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syahidah
syahidah syahidah
  • 08-09-2018
hehehehehehehe.......
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gmany
gmany gmany
  • 08-09-2018

[tex]8=2^3\\4=2^2\\\\8^3\div4^3\times2^5=(2^3)^3\div(2^2)^3\times2^5\\\\\text{Use}\ (a^n)^m=a^{n\cdot m}\\\\=2^{3\cdot3}\div2^{2\cdot3}\times2^5=2^9\div2^6\times2^5\\\\\text{Use}\ a^n\times a^m=a^{n+m}\ \text{and}\ a^n\div a^m=a^{n-m}\\\\=2^{9-6+5}=2^8[/tex]

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