Question

The sum of 4x^2-3x+6-7x^2+3x+6

Answer 1

-3x^2+12

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

Answer 2

-3x^2 + 12

Explanation:

You combine like terms. So 4x^2 -7x^2, 3x-3x, 6+6.