Question

Math solve pls no links

Answer 1

`1) {b}^( - 4) / {b}^(9) \\ = {b}^( - 4) * {b}^( - 9) = {b}^( - 13) =1/b^13\\ 2) \frac{ {4}^( 5) * {4}^( - 8) }{ { {4}^(3) }^(2) } \\ = \frac{ {4}^( - 3) }{ {4}^(6) } \\ = {4}^( - 3) * {4}^( - 6) \\ = {4}^( - 9) \\ hank \: you`

Answer 2

Question 10.

• 
  `\frac{b {}^( - 4) }{b {}^(9) }`

• 
  `\frac{1}{b {}^(9) * b {}^(4) }`

• 
  `\frac{1}{ {b}^(13) }`

correct option is A

Question 20.

• 
  `\frac{4 {}^(5) (4 {}^( - 8)) }{(4 {}^(3) ) {}^(2) } {}^{}`

• 
  `\frac{(4 ){}^(5 - 8) }{ {4}^(6) }`

• 
  `4 {}^( - 3) * 4 {}^( - 6)`

• 
  `4 {}^( - 9)`

therefore, D is the correct option