Question

9^n+1 - 2×9^n = 7 find n ​

Answer 1

Answer:

Answer is ∅→ ( 0 )

Step-by-step explanation:

for your knowledge the answer is 0 because

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Answer 2

The given question is

${9}^{n + 1} - 2 \times {9}^{n} = 7$

we have to find the value of n from the above expression.

The value of n can be obtained by simplifying the power values that power n+1 can be split into n and 1

Step 1: The expression is

${9}^{ n+ 1} - 2 \times {9}^{n} = 7$

step 2: The Power of the 9 can be split into

${9}^{n} \times {9}^{1} - 2 \times {9}^{n} = 7$

step 3: Taking the common value we get

${9}^{n} (9 - 2) = 7$

${9}^{n} (7) = 7$

step 4: The 7 on the left side moves to the denominator of the right side

${9}^{n} = \frac{7}{7}$

${9}^{n} = 1$

step 5: As we know the value 1 is obtained when the power is zero.

whatever may be the exponent if the power is zero the value will be always 1.

${9}^{0} = 1$

Therefore, the value of n is obtained as 0.

The value of n in the given expression is 0

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