Question

9a - (3a + 2) (3a - 2) expand and simplify​

Answer 1

Step-by-step explanation:

9a- 9a^2+4

-9a^2 +9a +4

-9a^2 +12a-3a+4

3a (4-3a) -1 (4-3a)

(4-3a) ( 3a-1)

Answer 2

Answer:

9a-(3a x 3a) - (3a x 2)+(3a x2) -(2x 2)

=9a (6a- 6a +6a-4

= 4