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Pertanyaan

Diberikan polinomial f(x) + g(x) = 5x 5 + 4x 3 - x - 1 Jika g(x) = 3x + 4x - 1, maka f(x)adalah ….

Diberikan polinomial

f(x) + g(x) = 5x + 4x - x - 1

Jika g(x) = 3xbegin mathsize 14px style blank to the power of 5 end style + 4xbegin mathsize 14px style blank cubed end style - 1, maka f(x)adalah ….

  1. 2xbegin mathsize 14px style blank to the power of 5 end style

  2. 2xbegin mathsize 14px style blank to the power of 5 end style - x

  3. 2xbegin mathsize 14px style blank to the power of 5 end style + x

  4. 2xbegin mathsize 14px style blank to the power of 5 end style + 8xbegin mathsize 14px style blank cubed end style - x - 2

  5. 2xbegin mathsize 14px style blank to the power of 5 end style + 8xbegin mathsize 14px style blank cubed end style + x + 2

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Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah B.

jawaban yang tepat adalah B.

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Pembahasan

Dari soal, diketahui dua polinomial Maka diperoleh Jadi, jawaban yang tepat adalah B.

Dari soal, diketahui dua polinomial

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

Maka diperoleh

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

Jadi, jawaban yang tepat adalah B.

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Jika diketahui ( x − 2 ) ( 3 x 2 + 4 x − 7 ) − 4 x + 6 x 2 − 3 ​ = x − 2 A ​ + 3 x 2 + 4 x − 7 B x + C ​ Maka nilai dari A + B + C adalah ….

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