(-32)²⁷>(-18)³⁹

Ai h mk mk se k lai

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 Ta có :(-32)^27=(-2^5)^27=-(2^5x27)=-(2^135)

          (-18)^39<(-16)^39(1)(-16)^39=(-2^4)^39=-(2^4x39)=-(2^156)

    Vì 156> 135 nên 2^156 > 2^135 => -(2^135) > -(2^156)(2)

Từ (1) và (2) =>(-32)^27>(-18)^39

Vậy ......

2¹⁵⁶=2^4*39=(2⁴)³⁹=16³⁹

Vì 18>16 nên 18³⁹>16³⁹ hay 18³⁹>2¹⁵⁶

Ta có: \(32^{27}=\left(2^5\right)^{27}=2^{135}\)

\(16^{39}=\left(2^4\right)^{39}=2^{156}\)

mà \(2^{135}< 2^{156}\)

nên \(32^{27}< 16^{39}\)

mà \(16^{39}< 18^{39}\)

nên \(32^{27}< 18^{39}\)

\(\Leftrightarrow-32^{27}>-18^{39}\)

\(\Leftrightarrow\left(-32\right)^{27}>\left(-18\right)^{39}\)

\(\left(-32\right)^{27}=\left(-2\right)^{135}\)\(\)

\(\left(-18\right)^{39}=\left(-2\right)^{39}\cdot3^{78}\)

minh hong biet

Ta có: \(\left(-32\right)^{27}=\left(-2^5\right)^{27}=\left(-2\right)^{135}\)

\(Mà:\left(-18\right)^{19}< \left(-16\right)^{19}=\left(-2^4\right)^{39}=\left(-2\right)^{136}< \left(-2\right)^{135}=\left(-32\right)^{27}\)

\(\Rightarrow\left(-18\right)^{39}< \left(-32\right)^{27}\)

(-18)^339>(-32)^27

tk minh nha

Ta có: 

\(\left(-32\right)^{27}=\left(\left(-2\right)^5\right)^{27}=\left(-2\right)^{135}\)

Mà \(\left(-18\right)^{39}< \left(-16\right)^{39}=\left(\left(-2\right)^4\right)^{39}=\left(-2\right)^{156}< \left(-2\right)^{135}=\left(-32\right)^{27}\)

\(\Rightarrow\)\(\left(-18\right)^{39}< \left(-32\right)^{27}\)