1.

If two of the zeros of the polynomial x cube + x square - 9 x minus 9 are 3 and minus 3 then find the third zero

Answer»

Answer:

given polynomial = x³ + x² -9x - 9

here , a = 1

B = 1

C = -9

d = -9

and

TWO zeroes are 3 and - 3

LET the third ZERO be ß,

since

sum of zeros = -b/a

=> -3 + 3 + ß = -1/1

=> ß = -1

so, the third zero is -1.

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