Question

8a2+3ab-2b2, 3a2-ab+5b2 and 5ab-7a2-b2 ​

Answer 1

Answer:

8a2+3ab-2b2, 3a2-ab+5b2 and 5ab-7a2-b2

8a2+3a2+7a2+3ab-ab+5ab-2b2+5b2-b2

actual answer = 18a2+7ab+6b2

Answer 2

$\large \mathsf {\underline{Solution:-}}$

8a2 + 3ab - 2b2 + 3a2 - ab + 5b2 + 5ab - 7a2 - b2

= 8a2 + 3a2 - 7a2 + 3ab - ab + 5ab - 2b2 + 5b2 - b2

= -18a2 - 9ab - 8b2

Hope it helps