hstauder2026
hstauder2026 hstauder2026
  • 20-09-2018
  • Mathematics
contestada

Multiply or divide as indicated
b^3 x b^-3

Respuesta :

gmany
gmany gmany
  • 20-09-2018

The domain: [tex]b\neq0[/tex]

Method 1.

[tex]Use\ a^n\cdot a^m=a^{n+m}\\\\b^3\cdot b^{-3}=b^{3+(-3)}=b^{3-3}=b^0=1[/tex]

Method 2.

[tex]Use\ a^{-n}=\dfrac{1}{a^n}\\\\b^3\cdot b^{-3}=b^3\cdot\dfrac{1}{b^3}=\dfrac{b^3}{b^3}=1[/tex]

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