Answers

2015-06-13T12:13:14+05:30
We know that root 17 = root(42 +12 )
see  the attachedment.
then
 mark point A representing 4 on number line .Now construct AB of unit length perpendicular to Oa .Then taking O as centre and OB as radius. Draw an arc intersecting number line at C .C is represented as √17.

hope its help u.

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