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1070

Q:

If $$ \sqrt {x^2+y^2}=25$$, and y=2x, find x. 

  • 1
    5
  • 2
    25
  • 3
    $$ \sqrt {125}$$
  • 4
    $$ \sqrt {5}$$
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Answer : 3. "$$ \sqrt {125}$$"

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