Question

Please help i need this done asap

Answer 1

Answer:

A

Step-by-step explanation:

Using the rules of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$  , $a^{-m}$ = $\frac{1}{a^{m} }$  , $a^{0}$ = 1

(14x³$y^{-4}$ )(4$x^{-5}$$y^{4}$ )

= 14 × 4 × x³ × $x^{-5}$ × $y^{-4}$ × $y^{4}$

= 56 × $x^{(3-5)}$ × $y^{(-4+4)}$

= 56 × $x^{-2}$ × $y^{0}$

= 56 × $\frac{1}{x^2}$ × 1

= $\frac{56}{x^2}$ → A