Jika x10​=2​ dan y10​=7​−2​ Maka hasil dari xy adalah ....

Pertanyaan

begin mathsize 14px style open parentheses 2 close parentheses open parentheses 5 to the power of negative 1 half end exponent close parentheses equals open parentheses 0 , 4 close parentheses square root of x end style

Jika begin mathsize 14px style 10 over x equals square root of 2 end style dan begin mathsize 14px style 10 over y equals square root of 7 minus square root of 2 end style

Maka hasil dari xy adalah ....

  1. begin mathsize 14px style 100 open parentheses square root of 14 minus 2 close parentheses end style    

  2. begin mathsize 14px style fraction numerator open parentheses square root of 14 minus 2 close parentheses over denominator 100 end fraction end style    

  3. begin mathsize 14px style fraction numerator open parentheses square root of 14 plus 2 close parentheses over denominator 10 end fraction end style    

  4. begin mathsize 14px style 10 open parentheses square root of 14 plus 2 close parentheses end style    

N. Ayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Padang

Jawaban terverifikasi

Pembahasan

size 14px 10 over size 14px x size 14px equals square root of size 14px 2 fraction numerator size 14px 10 over denominator square root of size 14px 2 end fraction size 14px equals size 14px x fraction numerator size 14px 10 over denominator square root of size 14px 2 end fraction times fraction numerator square root of size 14px 2 over denominator square root of size 14px 2 end fraction size 14px equals size 14px x fraction numerator size 14px 10 square root of size 14px 2 over denominator size 14px 2 end fraction size 14px equals size 14px x size 14px x size 14px equals size 14px 5 square root of size 14px 2   

dan

size 14px 10 over size 14px y size 14px equals square root of size 14px 7 size 14px minus square root of size 14px 2 fraction numerator size 14px 10 over denominator square root of size 14px 7 size 14px minus square root of size 14px 2 end fraction size 14px equals size 14px y size 14px y size 14px equals fraction numerator size 14px 10 over denominator square root of size 14px 7 size 14px minus square root of size 14px 2 end fraction size 14px times fraction numerator square root of size 14px 7 size 14px plus square root of size 14px 2 over denominator square root of size 14px 7 size 14px plus square root of size 14px 2 end fraction size 14px y size 14px equals fraction numerator size 14px 10 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses over denominator size 14px 7 size 14px minus size 14px 2 end fraction size 14px y size 14px equals fraction numerator size 14px 10 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses over denominator size 14px 5 end fraction size 14px y size 14px equals size 14px 2 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses   

Maka

table attributes columnalign right center left columnspacing 0px end attributes row cell size 14px x size 14px y end cell size 14px equals cell open parentheses size 14px 5 square root of size 14px 2 close parentheses size 14px times size 14px 2 open parentheses square root of size 14px 7 size 14px plus square root of size 14px 2 close parentheses end cell row cell size 14px space size 14px space size 14px space end cell size 14px equals cell size 14px 10 open parentheses square root of size 14px 14 size 14px plus size 14px 2 close parentheses end cell end table       

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