Respuesta :

Answer:

c...................................................................................

Answer:

A

Step-by-step explanation:

Isolate 5q² by subtracting 20 from both sides

5q² = 405 ( divide both sides by 5 )

q² = 81 ( take the square root of both sides )

q = ± [tex]\sqrt{81}[/tex] = ± 9

Solution is { - 9, 9 }