cytorres127
cytorres127 cytorres127
  • 17-07-2018
  • Mathematics
contestada

Simplify the expression with using scientific notation (4 times 10 8)2

Respuesta :

gmany
gmany gmany
  • 26-07-2018

The scientific notation:

[tex]a\cdot10^n\\\\1\leq a < 10;\ n\in\mathbb{Z}[/tex]

[tex](4\cdot10^8)^2=4^2(10^8)^2=16\cdot10^{8\cdot2}=16\cdot10^{16}\\\\=1.6\cdot10\cdot10^{16}=1.6\cdot10^{17}[/tex]

Used:

[tex](a\cdot b)^n=a^n\cdot b^n\\\\(a^n)^m=a^{n\cdot m}\\\\a^n\cdot a=a^{n+1}[/tex]

Answer: (4 × 10⁸)² = 1.6 × 10¹⁷

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