=4 is one of the roots of theequation 3x2 + kx -2-0, find the value of – InterviewSolution

1.

=4 is one of the roots of theequation 3x2 + kx -2-0, find the value of k| 4. If xGEST : STANDARD X

Answer»

Given2x2+ kx + 3 = 0 has equal rootsHence b2– 4ac = 0That is (k)2– 4(2)(3) = 0k2– 24 = 0k2= 24∴k =± 2√6

X=43x4x4+k x 4 - 2 =048+4k-2=04k=-48+24k=-46K=-46\4K=11.5

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