Q2 of 227 Page 110

Find the values of k for which the roots are real and equal in each of the following equations

12x2 + 4kx + 3 = 0

12x2 + 4kx + 3 = 0






∴


⇒ 16k2 – 144 = 0


⇒ 16k2 = 144



⇒


⇒


∴ k = 3 and k = –3


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