Question

What must be added to (4a^2- b) to get (2a^2 + b)? Pls tell Me Fast. ​

Answer 1

Step-by-step explanation:

$4a^{2} - b + x = 2a^{2} + b$

$x = 4a^{2} - 2 a^{2} + b + b$

$x = 2a^{2} + 2b$

I hope this helps?