Respuesta :
Answer:
The question needs more information. We don't know what's the x. The number that represents the variable X in the parentheses. Or it could be like:
Step-by-step explanation:
Step-by-step explanation:
opening the bracket
5x-30=(2x+6)2
5x-30=4x+12
collecting like terms
5x-4x=12+30
x=42