Answer :
The Answer is -4x^2+10x+4
-4x^2 is not effected, as it has no like terms.
3x-(-7x) is equivalent to 3x+7x which equals 10x.
-5-(-9) is equivalent to -5+9 which equals 4.
-4x^2 is not effected, as it has no like terms.
3x-(-7x) is equivalent to 3x+7x which equals 10x.
-5-(-9) is equivalent to -5+9 which equals 4.