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theman0911 theman0911
  • 29-07-2015
  • Mathematics
Answered

2x^3+18x^2-18x-162 = 2(x+k)(x-k)(x+9) in the factored form what is the value for k

Verified Answer :

JaySL JaySL
  • 29-07-2015

Note that the last term will be equal to -18k^2, so we write the equation: -18k^2=162. Dividing by 18, we see that k^2=9, so k=3 or -3.

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