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Question

If x=43 is a zeroes of the polynomial p(x)=6x311x2+kx20, find the value of k.

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Solution

When we put the value of root of a polynomial into that polynomial we get 0
so,
6(43)311(43)2+k4320=0

=12891769+k4320=0

=489+k4320=0

489+43k20=0

=48+12k1809=0

=48180+12k=0

=228+12k

12k=228

k=22812

k=19

This is the required solution.

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