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Which statement about the zeroes of (x^2-6x+9) is correct?

Answer and explanation

Correct answer: Both zeroes are equal

The governing concept is factorisation of a quadratic polynomial and the relation between factors and zeroes. We factor the expression as x^2 - 6x + 9 = (x - 3)^2. Therefore, the equation (x - 3)^2 = 0 gives x = 3, counted twice. Hence the two zeroes are equal, so option B is correct. Option A is false because there are not two different roots. Option C is false because 3 is a real zero. Option D is false because the product of the zeroes is 3 × 3 = 9, not 6. The repeated factor also confirms that the quadratic has a repeated zero.

Related tags

PolynomialsEqual ZeroesFactorisationPolynomials In One VariableMathematicsClass 10 Mcq

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