Thank you for the opportunity to help you with your question!
When you have a minus sign − in front of a parenthesis, you change the sign of every term within the parenthesis. So change + to − and − to + .
a − (b −c + d) = a − b + c − d.
In your example the result is:-(2x^2+x+1)= -2x^2-x-1
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?