Answer:
-3x^2 + 12
Step-by-step explanation:
You combine like terms. So 4x^2 -7x^2, 3x-3x, 6+6.
Answer:
-3x^2+12
Step-by-step explanation:
4x^2-3x+6-7x^2+3x+6
collect like terms:
4x^2-7x^2-3x+3x+6+6
-3x^2+12
since -3x+3x have opposite sign the result is 0 so remove them from the expression
The answer will be : -3x^2+12
