Question

simplifique as frações algebricas! ​

Answer 1

$\frac{18y^2}{60y^5} = \frac{18\cdot{y}\cdot{y}}{60\cdot{y}\cdot{y}\cdot{y}\cdot{y}\cdot{y}} = \frac{18}{60\cdot{y}\cdot{y}\cdot{y}} = \frac{3}{10y^3}\\\\\frac{b^2+3b}{b+3} = \frac{b(b+3)}{b+3}=b\\\\\frac{x+z}{3x+3z} = \frac{x+z}{3(x+z)} = \frac{1}{3}\\\\\frac{x^2-25}{4x-20} = \frac{(x+5)(x-5)}{4(x-5)} = \frac{x+5}{4}$

PS: $x^2 - y^2 = (x+y)(x-y)$