Question

Is (y² + 15 ) a polynomial
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Explan.​

Answer 1

Answer:

y² + 4√3y - 15 = 0

y² + 5√3y - √3y - 15 = 0

y(y + 5√3) - √3(y + 5√3) = 0

(y - √3)(y + 5√3) = 0

y = √3 , y = -5√3

Now,

sum of zeroes = (-cofficient of x) / (cofficient of x²)

√3 + (-5√3) = -4√3/1

-4√3 = -4√3

product of zeroes = cofficient of x⁰/cofficient of x²

(√3) * (-5√3) = (-15)/1

-15 = -15