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Diketahui , Tentukan , , dan  dengan menggunakan m...

Diketahui begin mathsize 14px style p left parenthesis x right parenthesis equals 2 x cubed plus 5 x squared minus 12 x minus 6 end style, Tentukan begin mathsize 14px style p left parenthesis 2 right parenthesis end stylebegin mathsize 14px style p left parenthesis negative 3 right parenthesis end style, dan begin mathsize 14px style p left parenthesis 1 right parenthesis end style dengan menggunakan metode subtitusi dan skema

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Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis 2 right parenthesis end cell equals cell 2 open parentheses 2 close parentheses cubed plus 5 open parentheses 2 close parentheses squared minus 12 open parentheses 2 close parentheses minus 6 end cell row blank equals cell 16 plus 20 minus 24 minus 6 end cell row blank equals 6 end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis negative 3 right parenthesis end cell equals cell 2 open parentheses negative 3 close parentheses cubed plus 5 open parentheses negative 3 close parentheses squared minus 12 open parentheses negative 3 close parentheses minus 6 end cell row blank equals cell negative 54 plus 45 plus 36 minus 6 end cell row blank equals cell negative 39 end cell row blank blank blank end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell p left parenthesis x right parenthesis end cell equals cell 2 x cubed plus 5 x squared minus 12 x minus 6 end cell row cell p left parenthesis 1 right parenthesis end cell equals cell 2 open parentheses 1 close parentheses cubed plus 5 open parentheses 1 close parentheses squared minus 12 open parentheses 1 close parentheses minus 6 end cell row blank equals cell 2 plus 5 minus 12 minus 6 end cell row blank equals cell negative 11 end cell end table end style

 

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