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P=(2a−b+3c) dan Q=(−a+4b–2c), nilai dari P−2Q adalah ...

Pertanyaan

straight P equals left parenthesis 2 straight a minus straight b plus 3 straight c right parenthesis dan straight Q equals left parenthesis negative straight a plus 4 straight b – 2 straight c right parenthesis, nilai dari straight P minus 2 straight Q adalah ...

Z. Apriani

Master Teacher

Mahasiswa/Alumni Institut Teknologi Bandung

Jawaban terverifikasi

Jawaban

 nilai dari straight P minus 2 straight Q adalah table attributes columnalign right center left columnspacing 0px end attributes row blank blank 4 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight a end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 9 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight b end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 7 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight c end table.

Pembahasan

Berdasarkan soal diketahui straight P equals left parenthesis 2 straight a minus straight b plus 3 straight c right parenthesis dan straight Q equals left parenthesis negative straight a plus 4 straight b – 2 straight c right parenthesis, sehingga

table attributes columnalign right center left columnspacing 0px end attributes row cell straight P minus 2 straight Q end cell equals cell open parentheses 2 straight a minus straight b plus 3 straight c close parentheses minus 2 left parenthesis negative straight a plus 4 straight b minus 2 straight c right parenthesis end cell row blank equals cell 2 straight a minus straight b plus 3 straight c plus 2 straight a minus 8 straight b plus 4 straight c end cell row blank equals cell 4 straight a minus 9 straight b plus 7 straight c end cell end table


Jadi, nilai dari straight P minus 2 straight Q adalah table attributes columnalign right center left columnspacing 0px end attributes row blank blank 4 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight a end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 9 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight b end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 7 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank straight c end table.

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