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If 32a + 1 × 81a – 2 = 34a + 1, then find the value of a.1. 22. 43. 34. 0 |
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Answer» Correct Answer - Option 2 : 4 Given: 32a + 1 × 81a – 2 = 34a + 1 Concept: Ax × Ay = Ax + y If Bp = Bq, then p = q Calculation: 32a + 1 × 81a – 2 = 34a + 1 ⇒ 32a + 1 × 34(a – 2) = 34a + 1 ⇒ 3(2a + 1) + (4a – 8) = 34a + 1 ⇒ 36a – 7 = 34a + 1 Now, Bp = Bq ⇒ 6a – 7 = 4a + 1 ⇒ 2a = 8 ⇒ a = 4 ∴ The value of a is 4. |
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