Question

(4sqrt5 +6)^2

Answer 1

\[(4\sqrt5 +6)^2 = (4\sqrt5 +6)*(4\sqrt5 +6)\] do you remember how to FOIL?

Answer 2

Or use this pattern:\[(a+b)^2=a^2+2ab+b^2\]

Answer 3

\[(4\sqrt5 +6)^2=80+48\sqrt5+36=116+48\sqrt5\]