Question

from 5b^2-6a+39b take away 5a^2+4a-12b

Answer 1

5b^2-6a+39b-(5a^2+4a-12b)

5b^2-6a+39b-5a^2-4a+12b

5b^2-6a-4a+39b+12b-5a^2

5b^2-10a+51b-5a^2

Answer 2

5b^2-6a+,39b

4a-12b. 5a^2
_________________
-5b^2-10a+51b-5a^2

so the answer is -5a^2-5b^2-10a+51b