Roboguru

Nilai dari  adalah ...

Nilai dari open parentheses 3 to the power of 5 cross times 9 to the power of negative 2 end exponent close parentheses squared adalah ...

  1. 3

  2. 9

  3. 27

  4. 81

Jawaban:

Ingat sifat-sifat pada operasi hitung bilangan berpangkat.

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses 3 to the power of 5 cross times 9 to the power of negative 2 end exponent close parentheses squared end cell equals cell 3 to the power of 5 times 2 end exponent cross times 9 to the power of negative 2 times 2 end exponent end cell row blank equals cell 3 to the power of 10 cross times 9 to the power of negative 4 end exponent end cell row blank equals cell 3 to the power of 10 cross times open parentheses 3 squared close parentheses to the power of negative 4 end exponent end cell row blank equals cell 3 to the power of 10 cross times 3 to the power of 2 times negative 4 end exponent end cell row blank equals cell 3 to the power of 10 cross times 3 to the power of negative 8 end exponent end cell row blank equals cell 3 to the power of 10 plus left parenthesis negative 8 right parenthesis end exponent end cell row blank equals cell 3 to the power of 10 minus 8 end exponent end cell row blank equals cell 3 squared end cell row blank equals 9 end table

Oleh karena itu, jawaban yang benar adalah B.

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