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Question

If 5x+1=25x2 Find the value of : 3x3×23x.

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Solution

5x+1=25x2
5x+1=(52)x2
5x+1=52x4 [If bases are equal, powers are also equal]
x+1=2x4
2xx=4+1
x=5
3x3×23x=353×235=32×22=9×14=94

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