Question

Simplificando a expressão 10^-3 x 10^5 / 10^1x10^4
a) 10^−2
b) 10^−3
c) 10^4
d) 10^3

Answer 1

$\mathsf{\dfrac{10^{-3}\cdot10^5}{10\cdot10^4}=\dfrac{10^{-3+5}}{10^{1+4}}}\\\mathsf{\dfrac{10^2}{10^5}}\\\mathsf{10^{2-5}}\\\large\boxed{\boxed{\boxed{\boxed{\mathsf{=10^{-3}}}}}}\\\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\maltese~~alternativa~~b}}}}}$