anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
satellite please go back to my question for a sec
UnkleRhaukus
  • UnkleRhaukus
\[(√11-√7)^2\] \[=11-2√11√7+7\] \[=18-2√77\]
UnkleRhaukus
  • UnkleRhaukus
did you get that formula right satellite?

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anonymous
  • anonymous
heck no i was wrong!!
anonymous
  • anonymous
unkle has it , ignore me. i messed up
UnkleRhaukus
  • UnkleRhaukus
\[(a-b)^2=(a-b)(a-b)=a^2-2ab+b^2\]
anonymous
  • anonymous
how do u get the 2 X ,/77? i tried foil, but it wont give me the same result
anonymous
  • anonymous
nvm i gotcha
anonymous
  • anonymous
thanks
UnkleRhaukus
  • UnkleRhaukus
so you can leave the solution as =18−2√77 or =18-2√7√11
anonymous
  • anonymous
okay thanks.

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