Math, asked by nupurhossain77, 1 month ago

Use the substitution u=5^x to solve the equation 5^2x-2(5^x+1)+21=0

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Answered by Anonymous

0

Answer:

philadelphia,,,,,,,,,,,,,,,,,,,,,,,,

Step-by-step explanation:

Answered by mdehsan00588

0

Answer:

I don't know what a Question

Step-by-step explanation:

soory

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