Answer :
Well x^2 is the same as x-squared (I don't know how to type it).
So to start off, you have x-squared-4x-12
Then you just have to combine the x's, and 1x-4x=-3x
so your final answer would be -3x-squared-12
So to start off, you have x-squared-4x-12
Then you just have to combine the x's, and 1x-4x=-3x
so your final answer would be -3x-squared-12