Question

Help me quickly please ​

Answer 1

Answer:

-2a^2 + 2ab + 2b^2 - 4

Step-by-step explanation:

Let the number to be subtracted from (6a^2 - 12ab - 6b^2 -2) be x.

(6a^2 - 12ab - 6b^2 - 2) - x = (8a^2 - 14ab - 8b^2 + 2)

Therefore x = (6a^2 - 12ab - 6b^2 -2) - (8a^2 - 14ab - 8b^2 + 2)

x = 6a^2 - 8a^2 -12ab + 14ab - 6b^2 + 8b^2 -2 -2

x = -2a^2 + 2ab + 2b^2 - 4

Answer 2

Answer:

-2a² + 2ab + 2b² - 4

Step-by-step explanation:

=6a² - 12ab - 6b² - 2 -(8a² - 14ab - 8b² + 2)

=6a² - 12ab - 6b² - 2 - 8a² + 14ab + 8b² - 2

=-2a² + 2ab + 2b² - 4