What are the roots of x² + 14x + 49 = 0?
x² + 14x + 49 = 0 के roots क्या होंगे?
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Correct Answer
B. -7 और -7 / -7 and -7
ExplanationStep 1: This is a perfect square quadratic. Step 2: x²+14x+49 = (x+7)² so root -7 is repeated. Step 3: In a perfect square both roots are equal.
Step 1: यह perfect square quadratic है। Step 2: x²+14x+49 = (x+7)² इसलिए root -7 repeated है। Step 3: Perfect square में दोनों roots equal होते हैं।