Question

7a²-3b², 5a² + 6b², 2a²+7b²​

Answer 1

Answer:

$5a {}^{2} + 6b {}^{2}$

$+ 2a { }^{2} + 7b {}^{2}$

$= 7a {}^{2} + 13b {}^{2}$

$7a {}^{2} + 13b {}^{2}$

$- 7a {}^{2} - 3b {}^{2}$

$= 10b {}^{2}$