Question

Multiply. Try to recognize the type of product before multiplying
(8a^8+5)(8a^8-5)

Answer 1

(a+b)(a-b) looks similar, no?
\[(a+b)(a-b) =a ^{2}-b ^{2}\]

Answer 2

i try that in got myself lost

Answer 3

a=8a^8
b=5
so just square them...

Answer 4

8a^8(8a^8+5)+5(8a^8-5)

Answer 5

a=8a^8
b=5

\[a ^{2} =( 8a ^{8})^{2} = 64a ^{16}\]
\[b ^{2 } = 5^{2}=25\]
\[a ^{2}-b ^{2}=64a ^{16}-25\]