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Pertanyaan

Jika a = 27 dan b = 32 , nilai dari 4 a 2 1 ​ ⋅ 3 b 5 2 ​ adalah ...

Jika , nilai dari  adalah ...

  1. negative 25 

  2. negative 16 

  3. 0 

  4. 144 square root of 3 

  5. 576 square root of 3 

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S. Yoga

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah D.

jawaban yang tepat adalah D.

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Pembahasan

Ingat bahwa: Diketahui: Mencarinilai dari : Jadi,nilai dari adalah . Dengan demikian, jawaban yang tepat adalah D.

Ingat bahwa:

  • thin space a to the power of b plus c end exponent equals a to the power of b times thin space a to the power of c open parentheses a times thin space b close parentheses to the power of n equals a to the power of n b to the power of n open parentheses a to the power of b close parentheses to the power of c equals a to the power of b c end exponent a to the power of 1 half end exponent equals square root of a 

Diketahui:

a equals 27 space dan space b equals 32

Mencari nilai dari 4 a to the power of 1 half end exponent times 3 b to the power of 2 over 5 end exponent:

table attributes columnalign right center left columnspacing 0px end attributes row cell 4 a to the power of 1 half end exponent times 3 b to the power of 2 over 5 end exponent end cell equals cell 4 times thin space 27 to the power of 1 half end exponent times thin space 3 times thin space 32 to the power of 2 over 5 end exponent end cell row blank equals cell 4 times thin space open parentheses 3 cubed close parentheses to the power of 1 half end exponent times thin space 3 times thin space open parentheses 2 to the power of 5 close parentheses to the power of 2 over 5 end exponent end cell row blank equals cell 4 times thin space open parentheses 3 squared times thin space 3 close parentheses to the power of 1 half end exponent times thin space 3 times thin space open parentheses 2 close parentheses to the power of 10 over 5 end exponent end cell row blank equals cell 4 times thin space 3 to the power of 1 half end exponent open parentheses 3 squared close parentheses to the power of 1 half end exponent times thin space 3 times thin space 2 squared end cell row blank equals cell 4 times thin space 3 to the power of 1 half end exponent times thin space 3 to the power of 2 over 2 end exponent times thin space 3 times thin space 4 end cell row blank equals cell 4 times 3 to the power of 1 half end exponent times thin space 3 to the power of 1 times thin space 3 times 4 end cell row blank equals cell 4 times thin space 3 to the power of 1 half end exponent times thin space 3 times thin space 3 times thin space 4 end cell row blank equals cell 4 times thin space 3 times thin space 3 times thin space 4 times thin space 3 to the power of 1 half end exponent end cell row blank equals cell 144 times thin space 3 to the power of 1 half end exponent end cell row blank equals cell 144 square root of 3 end cell end table 

Jadi, nilai dari 4 a to the power of 1 half end exponent times 3 b to the power of 2 over 5 end exponent adalah 144 square root of 3.

Dengan demikian, jawaban yang tepat adalah D.

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