Respuesta :
Answer:
-5y+7y²+7x
Step-by-step explanation:
Since two opposites add up to zero, remove the from the expression
-4y+7y²+7x3y-4y
Collect like terms
-5y
Answer= -5y+7y²+7x
Answer:
-5y+7y²+7x
Step-by-step explanation:
Since two opposites add up to zero, remove the from the expression
-4y+7y²+7x3y-4y
Collect like terms
-5y
Answer= -5y+7y²+7x