Roboguru

Jika ,  dan , nilai

Jika begin mathsize 14px style f open parentheses x close parentheses equals x minus 2 end stylebegin mathsize 14px style g open parentheses x close parentheses equals 3 x plus 1 end style dan begin mathsize 14px style h open parentheses x close parentheses equals x squared plus 4 x minus 3 end style, nilai begin mathsize 14px style open parentheses g ring operator h ring operator f close parentheses open parentheses 3 close parentheses equals.... end style 

  1. begin mathsize 14px style 93 end style 

  2. begin mathsize 14px style 53 end style 

  3. begin mathsize 14px style 29 end style 

  4. begin mathsize 14px style 16 end style 

  5. begin mathsize 14px style 7 end style 

Jawaban:

Menentukan begin mathsize 14px style left parenthesis g ring operator h right parenthesis left parenthesis x right parenthesis end style.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses g ring operator h close parentheses open parentheses x close parentheses end cell equals cell g open parentheses h open parentheses x close parentheses close parentheses end cell row blank equals cell g open parentheses x squared plus 4 x minus 3 close parentheses end cell row blank equals cell 3 open parentheses x squared plus 4 x minus 3 close parentheses plus 1 end cell row blank equals cell 3 x squared plus 12 x minus 9 plus 1 end cell row blank equals cell 3 x squared plus 12 x minus 8 end cell end table end style 

Menentukan begin mathsize 14px style left parenthesis g ring operator h ring operator f right parenthesis open parentheses x close parentheses end style.

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis g ring operator h ring operator f right parenthesis left parenthesis x right parenthesis end cell equals cell left parenthesis open parentheses g ring operator h close parentheses ring operator f right parenthesis left parenthesis x right parenthesis end cell row blank equals cell 3 open parentheses x minus 2 close parentheses squared plus 12 left parenthesis x minus 2 right parenthesis minus 8 end cell row blank equals cell 3 open parentheses x squared minus 4 x plus 4 close parentheses plus 12 x minus 24 minus 8 end cell row blank equals cell 3 x squared minus up diagonal strike 12 x end strike plus 12 plus up diagonal strike 12 x end strike minus 32 end cell row blank equals cell 3 x squared minus 20 end cell end table end style 

Menentukan begin mathsize 14px style left parenthesis g ring operator h ring operator f right parenthesis left parenthesis 3 right parenthesis end style.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis g ring operator h ring operator f right parenthesis left parenthesis 3 right parenthesis end cell equals cell 3 times open parentheses 3 close parentheses squared minus 20 end cell row blank equals cell 27 minus 20 end cell row blank equals 7 end table end style 

Jadi, jawaban yang tepat adalah E.

0

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved