Question

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4.2^x-3 = 125

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Answer 1

=>4 . 2^x=128

=>2^x=32

=>2^x=2⁵

=>x=5

study well

Answer 2

4.2^x-3=125

4.2^x=125+3

4.2^x=128

2^x=128:4

2^x=32

2^x=2⁵

-> x=5

vậy x=5

Answer 3

\(4.2^x-3=125\)

\(4.2^x=125+3\)

\(4.2^x=128\)

       \(2^x=128:4\)

         \(2^x=32\)

\(\Rightarrow2^x=2^5\)

\(\Rightarrow x=5\)

Vậy \(x=5\)

Chúc bạn học tốt !!!

Answer 4

\(4.2^x-3=125\)

\(4.2^x=125+3\)

\(4.2^x=128\)

\(2^x=128\div4\)

\(2^x=32\)

\(2^x=2^5\)

\(x=5\)

    Vậy x = 5

Answer 5

\(4.2^x-3=125\)

\(\Leftrightarrow4.2^x=125+3\)

\(\Leftrightarrow4.2^x=128\)

\(\Leftrightarrow2^x=128:4\)

\(\Leftrightarrow2^x=32\)

\(\Leftrightarrow2^x=2^5\)

\(\Leftrightarrow x=5\)

Answer 6

2⁵

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