Math, asked by harshbhat35, 11 months ago

find the value of x​

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Answered by chandanpratik53
0

Answer:

x = 5  is the correct answer.

Step-by-step explanation:

⇒ 2 × [3ˣ - 3ˣ⁻¹] = 324

⇒ 3ˣ - 3ˣ⁻¹         = 162

⇒ 3ˣ - [3ˣ ÷ 3¹]   = 162                  [∵ 3ˣ ÷ 3¹ = 3ˣ⁻¹]

Now let us assume 3ˣ as 't'

⇒ t - [t ÷ 3]    =  162

⇒ [3t - t] ÷ 3  =  162

⇒ 2t ÷ 3        = 162

⇒ 2t              = 162 × 3

⇒ t                = 81 × 3

                     = 273

Now equating the value of 't' with 3ˣ.

⇒ 3ˣ   = 273

⇒ 3ˣ   = 3⁵

⇒ ∴ x = 5             ←ANSWER

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