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If 2a + 3b = 10 and ab = 3, then find the value of 4a2 + 9b2. |
60 62 64 66 |
64 |
If 2a + 3b = 10 ab = 3 Then , 4a2 + 9b2 ( a + b )2 = a2 + b2 + 2ab ( 10 )2 = 4a2 + 9b2+ 2 × 6 × 3 64 = 4a2 + 9b2 |
