QUESTION
x² - 9x + 20 = 0 का discriminant कितना है?
What is the discriminant of x² - 9x + 20 = 0?
CORRECT ANSWER
A
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EXPLANATION INSIDE
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Step 1: Discriminant D = b² - 4ac होता है। Step 2: D = 81 - 80 = 1। Step 3: D positive हो तो roots real और distinct होते हैं।