C. 7 और -7 / 7 and -7
ExplanationStep 1: x² - 49 is difference of squares. Step 2: (x-7)(x+7)=0 so roots are 7 and -7. Step 3: Remember a²-b² = (a-b)(a+b).
Step 1: x² - 49 difference of squares है। Step 2: (x-7)(x+7)=0 इसलिए roots 7 और -7 हैं। Step 3: a²-b² = (a-b)(a+b) याद रखें।
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