Question

how would one do this problem?:
(,/11 - ,/7)^2? it should be read as parenthesis, the square root of eleven minus the square root of 7 parenthesis squared

Answer 1

satellite please go back to my question for a sec

Answer 2

\[(√11-√7)^2\]
\[=11-2√11√7+7\]
\[=18-2√77\]

Answer 3

did you get that formula right satellite?

Answer 4

heck no i was wrong!!

Answer 5

unkle has it , ignore me. i messed up

Answer 6

\[(a-b)^2=(a-b)(a-b)=a^2-2ab+b^2\]

Answer 7

how do u get the 2 X ,/77? i tried foil, but it wont give me the same result

Answer 8

nvm i gotcha

Answer 9

thanks

Answer 10

so you can leave the solution as
=18−2√77
or
=18-2√7√11

Answer 11

okay thanks.