Question

find a quadratic polynomial whose one of the zeroes is -15 and sum of the zeroes is 42

Answer 1

Hi friend,

Here is your answer,
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One zero = -15                      {Given}
Sum of zeroes = 42               {Given}

Second zero = 42-(-15)
                     = 42+15
                     = 57

Product of zeroes = -15*57
                             = -855

p(x) = x²-(sum)x + product 
       = x² - 42x -855
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