Answer:
-4q^2+2q+7
Remove unecessary parenthesis
-5q^2+6q+7-(-q^2+4q)
when there is a - in front of an expression in parenthesis, change the sign of each term in the expression
-5q^2+6q+7+q^2-4q
collect like terms -5q^2 and q^2
-4q^2+6q+7-4q
-4q^2+2q+7
