Solve for x : 9^{x + 2} = 720 + 9^x

Question

KnowledgeBoat · Accepted Answer

Given, ⇒ 9^{x + 2} = 720 + 9^x ⇒ 9^x.9² = 720 + 9^x ⇒ 81.9^x - 9^x = 720 ⇒ 9^x(81 - 1) = 720 ⇒ 9^x.80 = 720 ⇒ 9^x = ⇒ 9^x = 9 ⇒ x = 1. Hence, x = 1.

Mathematics

Solve for x :
9^{x + 2} = 720 + 9^x

Indices

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Mathematics

Solve for x :9x + 2 = 720 + 9x

Indices

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Solve for x :
9^{x + 2} = 720 + 9^x

Solve for x :
2^{3x + 3} = 2^{3x + 1} + 48

Solve for x :
3(2^x + 1) - 2^{x + 2} + 5 = 0

(20⁰ - 18⁰) x 7⁰ is equal to:
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1
14
none of these