-3x^2 - 3 + 10x - 6
I know the answer to this problem is
-3x^2 +10x - 9
my problem is understanding this step the way i would work it out gives the answer -3x^2 + 10x - 3 which is wrong.
my understanding is the sign is always stuck to the number when grouping like terms.
-3x^2 - 3 + 10x - 6
=
(group like terms)
-3x^2 + 10x - 3 - 6
=
-3x^2 + 10x - 3
any help would be great cheers guys
I know the answer to this problem is
-3x^2 +10x - 9
my problem is understanding this step the way i would work it out gives the answer -3x^2 + 10x - 3 which is wrong.
my understanding is the sign is always stuck to the number when grouping like terms.
-3x^2 - 3 + 10x - 6
=
(group like terms)
-3x^2 + 10x - 3 - 6
=
-3x^2 + 10x - 3
any help would be great cheers guys