Kuis +50

By Posted on

(1.) Jika f(x) = 2x²+5x-3, f(-3) = ….
(2.) Jika f(x) = 4x²+14x+6, f(-3) = ….
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Kuis +50

Kuis +50

Nomor satu

  • 2x² + 5x – 3
  • 2(-3)² + 5(-3) – 3
  • 2(9) + (-15) – 3
  • 18 + ( -15 ) – 3
  • 18 – 15 – 3
  • 3 – 3
  • 0

Nomor dua

  • 4x² + 14x + 6
  • 4(-3)² + 14(-3) + 6
  • 4(9) + -42 + 6
  • 36 – 42 + 6
  • -6 + 6
  • 0

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Gambar Jawaban

SOAL :

A) F(X) = 2X² + 5X – 3

F(–3) = 2(–3)² + 5(–3) – 3

F(–3) = 2(9) + [ –15 ] – 3

F(–3) = 18 + [ –15 ]– 3

F(–3) = 3 – 3

F(–3) = 0

B) F(X) = 4X² + 14X + 6

F(–3) = 4(–3)² + 14(–3) + 6

F(–3) = 4(9) + [ –42 ] + 6

F(–3) = 36 + [ –42 ] + 6

F(–3) = [ –6 ] + 6

F(–3) = 0