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Quadratic Functions

1) Solve Each Equation By Taking Roots :-

a)\(k^{2} = 76\)

Solution :-

\(k^{2} = 76\)

\(k =\pm √76\)

\(k = \sqrt{2*2*19}\)\             \((\because 76 =  2*2*19)\)
\(k = \pm2\sqrt{19}\)


b) \(k^{2}=16\)

Solution:-

\(k^{2}=16\)

\(k= \pm\sqrt{16} \)

\(k= \pm\sqrt{4*4}                  (\because 16 = 4*4)\)

\(k = \pm 4\)


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