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Question -

Find all the zeros of the polynomial x4 + x3 – 34x2 -4x+ 120, if two of its zeros are 2 and -2. [CBSE 2008]



Answer -


Either x + 6 = 0, then x = -6
or x – 5 = 0, then x = 5
Hence other two zeros are -6, 5
and all zeros are 2, -2, -6, 5

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