मराठी

Assertion (A): The polynomial $$p(x) = x^{2} + 3x + 3$$ has two real zeros. Reason (R): A quadratic polynomial can have at most two real zeros.

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प्रश्न

Assertion (A): The polynomial $$p(x)=x^{2}+3x+3$$ has two real zeros.

Reason (R): A quadratic polynomial can have at most two real zeros.

पर्याय

  • Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).

  • Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).

  • Assertion (A) is true and Reason (R) is false.

  • Assertion (A) is false and Reason (R) is true.

MCQ
विधान आणि तर्क
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उत्तर

Assertion (A) is false and Reason (R) is true.

Explanation:

Step 1 – Assertion: A is false. For $$p(x)=x^{2}+3x+3,$$ the discriminant is $$3^{2}-4(1)(3)=9-12=-3<0.$$ Hence, the polynomial has no real zeros.

Step 2 – Reason: R is true. A quadratic polynomial has degree two and can have at most two real zeros.

Step 3 – Link: The fact that a quadratic polynomial can have at most two real zeros does not establish that this particular polynomial has two real zeros.

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पाठ 20: Additional Questions - Quadratic Equations [पृष्ठ ९८६]

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आर. एस. अग्रवाल Mathematics [English] Class 10
पाठ 20 Additional Questions
Quadratic Equations | Q 2. | पृष्ठ ९८६
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