Question

(2a^2 - 5a + 10) - (a^2 - 9)
How do you answer this?

Answer 1

a^2 -5a + 19

Explanation:

(2a^2 - 5a + 10) - (a^2 - 9)

= (2a^2 - 5a + 10) - a^2 + 9 [Distribution]

= a^2 -5a + 19