Find the other zeros of f

label Algebra
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Dec 17th, 2014

f(x) = x^3 + 11x^2 - 150x - 1512
since -14 is one of the zeros,
so, x^2(x+14) -3x(x+14) -108(x+14)= 0
or, (x+14)(x^2- 3x -108)= 0

solving x^2 -3x -108 =0
or, x^2 - 12x +9x -108 =0
or, x(x-12) +9(x-12)= 0
or, (x-12)(x+9) =0
or, x =12 and -9

so the other zeros are 12 and -9


Please post the three equation separately as these are two  much to solve in easy question section.
Please best my answer and post it again I will help you with the answers of other two as well. Thanks :)

Dec 17th, 2014

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