show that the polynomial f(x) = x4 + 4x2 + 6 has no zero.
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because there are no method to solve it only it's graph can be drawn.
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Answer:
Step-by-step explanation:
x4 and x2 are always positive irrespective of whether x is positive or negative.
As all the 3 terms in this polynomial are all positive, this polynomial can never become zero for real values of x. Hence, the given polynomial has no real zeros.
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