CBSE Class 6 Answered
9 to be power x + 2 = 240+9 to be power x
Asked by Kamal | 28 Mar, 2017, 06:27: PM
Expert Answer
Given 9x+2 = 240 + 9x
⇒ 9x × 92 = 240 + 9x
Let 9x = a
⇒ 81a = 240 + a
⇒ 80a = 240
⇒ a = 3
but 9x = a
⇒ 9x = 3
⇒ 32x = 3
bases are equal powers should be equated.
⇒ 2x = 1
⇒ x = 1/2
Answered by | 28 Mar, 2017, 06:45: PM
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