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Question

If 3x1 =9 and 4y+2 =64, what is the value of xy

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Solution

3x1=93x1=32Comparing the powers, we getx1=2x=2+1=3x=3and 4y+2=64(4)y+2=(4)3Comparing the powers, we gety+2=3y=32=1y=1Nowxy=31=3


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