Question

a²+b²-7ab, 3b²,Subtract the given terms.

Answer 1

Solution :-
=a²+b²-7ab - (3b²)
= a²+b² - 7ab - 3b²
= a²-2b² - 7ab AnSwEr

Answer 2

Hello!

a² + b² - 7ab - ( 3b² )

⇒ a² + b² - 7ab - 3b²

⇒ a² + b² - 3b² - 7ab

⇒ $\boxed{\sf a^{2} - 2b^{2} - 7ab}$

Cheers!