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For any two non zero vectors write the value of `(| vec a+ vec b|^2+| vec a- vec b|^2)/(| vec a|^2+ | vec b"|^2)`

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Verified by Experts

Given: `frac{|vec{a}+vec{b}|^{2}+|vec{a}-vec{b}|^{2}}{|vec{a}|^{2}+|vec{b}|^{2}}`

So,

`=frac{|vec{a}|^{2}+|vec{b}|^{2}+2 vec{a} cdot vec{b}+|vec{a}|^{2}+|vec{b}|^{2}-2 vec{a} cdot vec{b}}{|vec{a}|^{2}+|vec{b}|^{2}} `

`=frac{2(|vec{a}|^{2}+|vec{b}|^{2}right)}{|vec{a}|^{2}+|vec{b}|^{2}}`

`=2`
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