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Diketahui  dan , tentukanlah: a.

Diketahui begin mathsize 14px style f left parenthesis x right parenthesis equals 2 x cubed plus x squared minus 5 x plus 4 end style dan begin mathsize 14px style g left parenthesis x right parenthesis equals 3 x squared – 2 x plus 5 end style, tentukanlah:

a. begin mathsize 14px style f open parentheses x close parentheses minus g open parentheses x close parentheses end style 

Jawaban:

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell f left parenthesis x right parenthesis minus g left parenthesis x right parenthesis end cell equals cell open parentheses 2 x cubed plus x squared minus 5 x plus 4 close parentheses minus open parentheses 3 x squared minus 2 x plus 5 close parentheses end cell row blank equals cell 2 x cubed plus x squared minus 5 x plus 4 minus 3 x squared plus 2 x minus 5 end cell row blank equals cell 2 x cubed minus 2 x squared minus 3 x minus 1 end cell end table end style 

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