anonymous
  • anonymous
find a cubic function with the given zeros square root of 6, negative square root of 6, -3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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hartnn
  • hartnn
if x= a is a zero, then \((x-a)\) is the factor of f(x). similarly, if \(x= \sqrt 6\) is a zero, \((x-\sqrt 6)\) would be the factor of f(x) did u get this? now can you tell me other 2 factors of f(x) ?
radar
  • radar
Here is another factor (it is given in the problem) Using the info furnished by hartnn. \[x+\sqrt{6}\]
radar
  • radar
Can you see what the third one (factor) would be?

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radar
  • radar
It is (x+3) That is the three factors which produce those three given zeroes. Now the problem is asking for the function, all you have to do is to multiply those three factors and voila you will have the cubic function. \[f(x)=(x-\sqrt{6})(x+\sqrt{6})(x+3)\]
radar
  • radar
The first two factors when multiplied be comes the familiar "difference of squares) or \[(x ^{2}-6)\]Now multiply that by x+3 and you will have the answer.
radar
  • radar
What did you get?

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