Question

(b) (2a? - 4a + 5)(a? + 3a - 1 — 7)​

Answer 1

Answer:

ans:-8a-3

Step-by-step explanation:

(2a-4a+5)(a+3a-1-7)

(-2a+5)(4a-8)

-2a+5×4a-8

-8a-3 .

I think it clear to you