(ii) kx (x - 2) + 6 = 0 find the value of k by quadratic formula equations and if roots are equal
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answer :
Given,
kx(x−2)+6=0
kx2−2kx+6=0
Since the roots are equal,
⇒b2=4ac
(−2k)2=4(k)(6)
4k2=4k(6)
∴k=6
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