show that the quadratic polynomial 4x^2+12x+15 has no real number.
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a = 4
b = 12
c = 15
Discriminent = b^2 - 4ac
= (12)^2 - 4(4)(15)
= 144 - 240
= - 96
Discriminent is negative, so the given equation does not have any real roots.
b = 12
c = 15
Discriminent = b^2 - 4ac
= (12)^2 - 4(4)(15)
= 144 - 240
= - 96
Discriminent is negative, so the given equation does not have any real roots.
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