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If \(p(x)=x^2+1\), which statement about its zeroes in the real numbers is correct?

Answer and explanation

Correct answer: No real zeroes

For a zero, \(x^2+1=0\), so \(x^2=-1\) must hold. For every real \(x\), \(x^2\geq 0\), hence \(x^2+1\geq 1>0\), and the expression can never be zero. Therefore, there are no real zeroes. Option C is incorrect because \(p(0)=1\), not 0. As an exam tip, when an equation gives \(x^2=-1\), check the domain: its solutions are complex, not real.

Related tags

Polynomials In One VariableReal ZeroesQuadratic PolynomialZeroes Of A PolynomialPolynomialsMathematicsClass 10 Mcq

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