Question

factor completely 1-8ab-20a^2b^2

Answer 1

\[
1 - 8 a b - 20 a^2 b^2 == -(?+2 a b) (-?+10 a b)
\]
Can you replace the ?

Answer 2

1,1

Answer 3

yes
\[
1 - 8 a b - 20 a^2 b^2 == -(1 + 2 a b) (-1 + 10 a b)
\]