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23-08-2020
Mathematics

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POLYNOMIALS
1. Find a quadratic polynomial whose zeroes are 3 and -5

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jimrgrant1 jimrgrant1

23-08-2020

Answer:

y = x² + 2x - 15

Step-by-step explanation:

Given the zeros are x = 3 and x = - 5 then the factors are (x - 3) and (x + 5)

The polynomial is then the product of its factors, thus

y = (x - 3)(x + 5) ← expand using FOIL

y = x² + 2x - 15

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