If a # b = a² + 9ab + 7b², then find the value of 3 # 4.
यदि a # b = a² + 9ab + 7b², तो 3 # 4 का मान ज्ञात कीजिए।
Answer और ExplanationAnswer and explanation
Answer: (D) 229
3 # 4 = 32 + 9 × 3 × 4 + 7 × 42
= 9 + 108 + 112 = 229
✓
उत्तर 229 है।
3 # 4 = 32 + 9 × 3 × 4 + 7 × 42
= 9 + 108 + 112 = 229
✓
The answer is 229.
Source: UP Police SI · 14 Mar 2026 · Shift 1। Solution: Prashant Sir, Vijayastra।Source: UP Police SI · 14 Mar 2026 · Shift 1. Solution by Prashant Sir, from Vijayastra.