1.

What is the value of k in the polynomial x2 +8x +k if -2 is a zero of the polynomial?

Answer»

If ,
(-2) is zero of polynomial then it will satisfy the EQN
{x}^{2}  + 8x + k \\  {( - 2)}^{2}  + 8( - 2) + k = 0 \\ 4 - 16 + k = 0 \\ k = 12
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