19. Find all other zeros of the polynomial p(x) = 2x + 3x - 11x - 6, if one of its zero is -3.
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I think you mean for the equation 2x³+3x²-11x-6?
In that case the answer is:
Since (-3) is one of its zeroes, therefore (x+3) is a factor of the polynomial.
(2x³+3x²-11x-6)÷(x+3)
=2x²-3x-2
=2x²-4x+x-2
=2x(x-2)+1(x-2)
=(2x+1)(x-2)
Therefore the other zeroes are (-½), 2
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