Question

If 3 -3are two zero of polynomial x4+x3-11x2-9x+18find all zero

Answer 1

That is an answer for your question

Answer 2

p(x) = x^4 + x^3 - 11x^2 - 9x +18 = 0

p(3) = 3^4 + 3^3 - 11(3)^2 - 9(3) +18 = 0

81 + 27 - 11(9) - 27 +18 = 0

81 + 27 +18 - 99 - 27 = 0

126 - 126 = 0

0 = 0



p( -3 ) = (- 3)^4 + (- 3)^3 - 11(- 3)^2 -9(- 3) + 18 = 0

81 - 27 - 99 + 27 + 18 = 0

- 99 - 27 + 81 + 27 + 18= 0

- 126 + 126 = 0

0 = 0
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