Question

how do you do this

Answer 1

\[(8+\sqrt{10})(8-\sqrt{10})\]

Answer 2

54

Answer 3

howd you get that

Answer 4

When you FOIL it:

Answer 5

in your head as \((a+b)*(a-b)=a^2-b^2\) making this \(8^2-10\)

Answer 6

^ that

Answer 7

(8+√10)(8−√10)

(a+b)(a-b)=a^2-b^2

(8)^2-(√10)^2

64-10

Answer 8

thanks

Answer 9

My Pleasure.