Question

Please tell me that how can I solve this problem ....hope you all will me fastly...

Answer 1

3(2^x+1)-2^(x+2)+5=0
3*2^x+3-2^x*2²+5=0
3*2^x-2^x*2²=-8
2^x(3-4)=-8
-2^x=-2³
x=3

Answer 2

$3( 2^{x}+1)-2^{x+2}+5=0 \\ 3 \times 2^{x} +3-2^{x} \times 2^{2} +5=0 \\ 3 \times 2^{x}+3 -4 \times 2^{x} +5 =0 \\ 3 \times 2^{x} -4 \times 2^{x} +3+5 =0 \\ -2^{x}+8=0 \\ 2^{x} = 8 \\ 2^{x} = 2^{3}$
Therefore, x = 3.

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