Question

8. (4a + 5b - 7)(4a + 5b + 2)​

Answer 1

Answer:

(4a)2+(5b)2+7×2

Step-by-step explanation:

+@-|+|*'_~+('(-|_~*@'52☺️☺️8^₹-|×÷~&2;|@(|/2₹

Answer 2

Answer:

(4a+5b-7)(4a+5b+2)

4a(4a+5b+2)+5b(4a+5b+2)-7(4a+5b+2)

16a²+20ab+8a+20ab+25b²+10b-28a-35b-14

16a²+40ab+8a+25b²+10b-28a-35b-14

16a²+40ab-20a+25b²-25b-14

=16a²+40ab+25b²-20a-25b-14