Question

Which expression is equivalent to b^-2/ab^-5?
a) a/b^5
b)1/ab^5
c)a^3b/1
d)b/a

Answer 1

`\bf a^{-{ n}} \implies \cfrac{1}{a^( n)}\qquad \qquad \cfrac{1}{a^(-n)}\implies a^{{ n}}\\\\ -------------------------------\\\\ \cfrac{b^(-2)}{ab^(-5)}\implies \cfrac{b^(-2)\cdot b^(+5)}{a}\implies \cfrac{b^(-2+5)}{a}\implies \cfrac{b^3}{a}`