Question

a2-3b2+7ab from -a2-3b2+7ab​

Answer 1

Answer:

$2a2$

Step-by-step explanation:

$(-a2 -3b2 + 7ab) - (a2 -3b2 +7ab)$

=> $-a2-3b2+7ab - a2 +3b2-7ab$

=> $( -a2 -a2) + ( -3b2 + 3b2)+(7ab-7ab)$

=> $2a2 + 0 + 0$

=> $2a2$