If the projections of the line segment AB on the coordinate axes are 2,k,4 such that k∈R+ and AB=7√2, then 2k2−√2k+1 is equal to :

If the projections of the line segment AB on the coordinate axes are 2

1.	If the projections of the line segment AB on the coordinate axes are 2,k,4 such that k∈R+ and AB=7√2, then 2k2−√2k+1 is equal to :
Answer» If the projections of the line segment $A B$ on the coordinate axes are $2, k, 4$ such that $k \in R^{+}$ and $A B = \frac{7}{\sqrt{2}},$ then $2 k^{2} - \sqrt{2} k + 1$ is equal to :

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If the projections of the line segment AB on the coordinate axes are 2,k,4 such that k∈R+ and AB=7√2, then 2k2−√2k+1 is equal to :

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