Asked by Cinna
Explain how x^4+7x^2+20 and x^2+7x+20 are alike and different.
Answers
Answered by
drwls
They are different degrees of polynomials, but have the same set of coefficients.
The roots of x in the second expression are the roots of x^2 in the second expression.
Neither function has real roots (for which the function value is zero).
The roots of x in the second expression are the roots of x^2 in the second expression.
Neither function has real roots (for which the function value is zero).
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