Question

Quis/Cèyàn zhī yè

7! + 8! - 9! × 5 = ?


#No Ngasal
#Pake Jalan Pengerjaan

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Answer 1

Penjelasan dengan langkah-langkah:

7! + 8! - 9! × 5

= (7×6×5×4×3×2×1) + (8×7×6×5×4×3×2×1) - ((9×8×7×6×5×4×3×2×1) × 5)

= (42×20×6) + (56×30×12×2) - ((72×42×20×6) × 5)

= (840×6) + (1.680×24) - ((3.024×120) × 5)

= 5.040 + 40.320 - (362.880 × 5)

= 5.040 + 40.320 - 1.814.400

= 45.360 - 1.814.400

= { -1.769.040 }

<(KS)>

Answer 2

Diketahui :

7! + 8! - 9! × 5

7!

= 7 × 6 × 5 × 4 × 3 × 2 × 1

= 42 × 5 × 4 × 3 × 2 × 1

= 210 × 4 × 3 × 2 × 1

= 840 × 3 × 2 × 1

= 2.520 × 2 × 1

= 5.040 × 1

= 5.040 √

8!

= 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 56 × 6 × 5 × 4 × 3 × 2 × 1

= 336 × 5 × 4 × 3 × 2 × 1

= 1.680 × 4 × 3 × 2 × 1

= 6.720 × 3 × 2 × 1

= 20.160 × 2 × 1

= 40.320 × 1

= 40.320 √

9!

= 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 72 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 504 × 6 × 5 × 4 × 3 × 2 × 1

= 3.024 × 5 × 4 × 3 × 2 × 1

= 15.120 × 4 × 3 × 2 × 1

= 60.480 × 3 × 2 × 1

= 181.440 × 2 × 1

= 362.880 × 1

= 362.880 √

Ditanya :

7! + 8! - 9! × 5 = ?

Dijawab :

7! + 8! - 9! × 5

= 5.040 + 40.320 - 362.880 × 5

= 5.040 + 40.320 - (362.880 × 5)

= 5.040 + 40.320 - 1.814.400

= 45.360 - 1.814.400

= -1.769.040 √

Keterangan :

→ Maka, hasilnya adalah -1.769.040

semoga membantu