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find a quadratic polynomial whose zeroes …

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find a quadratic polynomial whose zeroes are (5+√2) and (5-√2)
  • 1 answers

Gaurav Seth 4 years, 9 months ago

Given zeroes,
5+√2 and 5-√2
Sum of the zeroes=5+√2+5-√2
Sum of the zeroes=10
Product of zeroes=(5+√2)(5-√2)
Product of zeroes=25-2=23
We know that quadratic polynomial is in the form of,
=k{x²-(sum of zeroes)x+product of zeroes}
By putting required values we get,
=k{x²-10x+23}

=x²-10x+23

Hence x²-10x+23 is the required polynomial.

 

Or

So, f(x) = k {x2 - 10x + 23}, where, k is any non-zero real number.

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