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If D = 4477, then the roots are...

If D = 4477, then the roots are

A

equal and real

B

irrational

C

conjugate pairs

D

rational and unequal

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The correct Answer is:
To solve the problem, we need to analyze the discriminant \( D \) given as \( 4477 \) and determine the nature of the roots of the corresponding quadratic equation. ### Step-by-Step Solution: 1. **Understanding the Discriminant**: The discriminant \( D \) of a quadratic equation \( ax^2 + bx + c = 0 \) is given by the formula: \[ D = b^2 - 4ac \] The nature of the roots depends on the value of \( D \): - If \( D > 0 \): The roots are real and distinct. - If \( D = 0 \): The roots are real and equal. - If \( D < 0 \): The roots are complex (not real). 2. **Given Value of D**: Here, we have \( D = 4477 \). Since \( 4477 > 0 \), we can conclude that the roots are real and distinct. 3. **Checking for Rationality**: To determine if the roots are rational or irrational, we need to check if \( D \) is a perfect square. A perfect square is an integer that is the square of another integer. 4. **Finding the Square Root**: We can find the square root of \( 4477 \): \[ \sqrt{4477} \approx 66.8 \] Since \( 66.8 \) is not an integer, \( 4477 \) is not a perfect square. 5. **Conclusion on the Nature of Roots**: Since \( D > 0 \) and \( D \) is not a perfect square, the roots are real, distinct, and irrational. ### Final Answer: The roots are **real, distinct, and irrational**.
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