Question

2^n + 3 . 2^n =144

Answer 1

2ⁿ + 3.2ⁿ = 144

=> 2ⁿ(1 + 3) =144

=> 2ⁿ.4 = 144

=> 2ⁿ = 36

=> 2ⁿ = 2⁵

^=> n = 5

Answer 2

\(2^n+3.2^n=144\)

\(=>2^n.\left(1+3\right)=144=>2^n.4=144=>2^n=144:4=36\)

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Answer 3

mk chữa lại đoạn cuối

2ⁿ = 36 => n \(\in\varnothing\)

Answer 4

\(2^n+3.2^n=144\)

\(2^n.\left(1+3\right)=144\)

\(2^n.4=144\)

=> \(2^n=36\)

=> n = ∅

Chúc học tốt!!!

Answer 5

2n + 3.2n = 144

=> 2n(1 + 3) =144

=> 2n.4 = 144

=> 2n = 36

=> 2n = 25

=> n = 5