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Question

Solve : 3(2x+1)2x+2+5=0


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Solution

3 open parentheses 2 to the power of x plus 1 close parentheses minus 2 to the power of x plus 2 end exponent plus 5 equals 0
3 cross times 2 to the power of x plus 3 minus 2 to the power of x cross times 2 squared plus 5 equals 0
3 cross times 2 to the power of x plus 3 minus 4 cross times 2 to the power of x plus 5 equals 0
minus 2 to the power of x plus 8 equals 0
2 to the power of x equals 8
x equals 3

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