Plzzz solv it fast question 40 i
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3(2^x +1 ) -2^(x +2) +5 =0
3(2^x +1) -2^x.2^2 + 5 =0
3(2x +1) -4.2^x +5 =0
let 2^x = r
3( r +1) -4r + 5 =0
3r +3 -4r +5 =0
r = 8
so , 2^x = 8 =2³
x = 3
3(2^x +1) -2^x.2^2 + 5 =0
3(2x +1) -4.2^x +5 =0
let 2^x = r
3( r +1) -4r + 5 =0
3r +3 -4r +5 =0
r = 8
so , 2^x = 8 =2³
x = 3
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