C. 45 / 45
ExplanationStep 1: Put 5 in place of x. Step 2: 5² + 4×5 = 25 + 20 = 45. Step 3: Do square and multiplication carefully in polynomial questions.
Step 1: x की जगह 5 रखें। Step 2: 5² + 4×5 = 25 + 20 = 45। Step 3: Polynomial में square और multiplication ध्यान से करें।
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