C. 2x+3
ExplanationStep 1: Identify sum rule. Step 2: By sum rule the derivative is 2x+3. so the correct option follows. Step 3: In exam questions apply the formula first.
Step 1: sum rule पहचानें। Step 2: sum rule से derivative 2x+3 है। इसलिए सही विकल्प मिलता है। Step 3: ऐसे प्रश्नों में पहले सूत्र लगाएँ।
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