Q.4x + 5x___________4! + 6! - 5!Note :.___.

Q.4x + 5x___________4! + 6! – 5!Note :.___.

Jawaban:

4x + 5x =

(4 + 5)x =

•

4! + 6! – 5! =

(4×3×2×1) + (6×5×4×3×2×1) – (5×4×3×2×1) =

(12×2×1) + (30×4×3×2×1) – (20×3×2×1) =

24 + (120×3×2×1) – (60×2×1) =

24 + (360 × 2 × 1) – 120 =

24 + 720 – 120 =

744 – 120 =

624

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Gambar Jawaban

Penjelasan dengan langkah-langkah:

4x + 5x

(4 + 5)x

= 9x

______________________

4! + 6! – 5!

(4x3x2) + (6x5x4x3x2) – (5x4x3x2)

24 + 720 – 120

744 – 120

= 624