1.

If 1/3is a zero of the polynomial. Find k.​

Answer»

LET

f(x) = 3 {x}^{3}  - 4 {x}^{2}  - 17x - k

Then,

f( \frac{1}{3} ) = 0 \\  =  >  \frac{3}{27}  -  \frac{4}{9}  -  \frac{17}{3}  - k = 0 \\  =  >  \frac{1 - 4 - 51 - 9k}{9}  = 0 \\  =  > 1 - 55 - 9k = 0 \\  =  >  - 9k = 54 \\  =  > k =  - 6

HOPE THIS COULD HELP!!!



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