Pertanyaan

Sederhanakan operasi bilangan berpangkat berikut ! a. ( a 3 2 ​ ) 2 b. ( b − 5 3 ​ ) 4 c. ( x 4 3 ​ ) − 5

Sederhanakan operasi bilangan berpangkat berikut !

a.
b.
c.

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bentuk sederhana dari , , dan .

bentuk sederhana dari Error converting from MathML to accessible text., open parentheses b to the power of negative 3 over 5 end exponent close parentheses to the power of 4 equals table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 over b to the power of begin display style 12 over 5 end style end exponent end cell end table, dan open parentheses x to the power of 3 over 4 end exponent close parentheses to the power of negative 5 end exponent equals table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 over x to the power of begin display style 15 over 4 end style end exponent end cell end table.

Pembahasan

Ingatlah sifat-sifat bilangan berpangkat berikut. Berdasarkan sifat-sifat di atas, maka: a) b) c) Dengan demikian, bentuk sederhana dari , , dan .

Ingatlah sifat-sifat bilangan berpangkat berikut.

left parenthesis straight i right parenthesis space space open parentheses a to the power of m close parentheses to the power of n equals a to the power of m cross times n end exponent left parenthesis ii right parenthesis space a to the power of negative m end exponent equals 1 over a to the power of m   

Berdasarkan sifat-sifat di atas, maka:

a)

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses a to the power of 2 over 3 end exponent close parentheses squared end cell equals cell a to the power of 2 over 3 cross times 2 end exponent end cell row blank equals cell a to the power of 4 over 3 end exponent end cell end table

b)

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses b to the power of negative 3 over 5 end exponent close parentheses to the power of 4 end cell equals cell b to the power of negative 3 over 5 cross times 4 end exponent end cell row blank equals cell b to the power of negative 12 over 5 end exponent end cell row blank equals cell 1 over b to the power of begin display style 12 over 5 end style end exponent end cell end table

c)

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses x to the power of 3 over 4 end exponent close parentheses to the power of negative 5 end exponent end cell equals cell x to the power of 3 over 4 cross times open parentheses negative 5 close parentheses end exponent end cell row blank equals cell x to the power of negative 15 over 4 end exponent end cell row blank equals cell 1 over x to the power of begin display style 15 over 4 end style end exponent end cell end table

Dengan demikian, bentuk sederhana dari Error converting from MathML to accessible text., open parentheses b to the power of negative 3 over 5 end exponent close parentheses to the power of 4 equals table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 over b to the power of begin display style 12 over 5 end style end exponent end cell end table, dan open parentheses x to the power of 3 over 4 end exponent close parentheses to the power of negative 5 end exponent equals table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell 1 over x to the power of begin display style 15 over 4 end style end exponent end cell end table.

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