Answer:
First part.
Explanation:
The first part is wrong. Because when you divide a number by a fraction, you will have convert it to multiply upside-down fraction but not the number that is divided :
[tex] \frac{ {x}^{2} - 4 }{5x} \div \frac{x + 2}{x - 2} [/tex]
[tex] = \frac{(x + 2)(x - 2)}{5x} \times \frac{x - 2}{x + 2} [/tex]
[tex] = \frac{ {(x - 2)}^{2} }{5x} [/tex]
e.g
(1/2)÷5 = (1/2)×(1/5)
= 1/10
e.g
2÷1/4 = 2×4
= 8
(I hope you understand)
