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Question

Find the quadratic polynomial whose one zero is 5 and the product of roots is 30.

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Solution

One zero say α=5
Product of roots=30
Another root be =β
We know, αβ=30
β=305
β=6
Polynomial :(xα)(xβ)=0
p(x):(x6)(x5)=0
p(x):x211x+30

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