Question

Q.

5y × y! - 9y = ?
y = 10
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Rules:

Pek cara!!
No ngasal!!
No copas!!
No kalku!!
perkalian wajib pakai lampiran!!
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nt : on sbntr ​

Answer 1

Jawaban:

5y × y! - 9y = 181.439.910

y = 10

• Penyelesaian

= 5(10) × 10! - 9(10)

= (5 × 10) × (10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) - (9 × 10)

= 50 × 3.628.800 - 90

= 181.440.000 - 90

= 181.439.910

Answer 2

Diketahui :

5y × y! - 9y

y = 10

10

= 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 90 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 720 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 5.040 × 6 × 5 × 4 × 3 × 2 × 1

= 30.240 × 5 × 4 × 3 × 2 × 1

= 151.200 × 4 × 3 × 2 × 1

= 604.800 × 3 × 2 × 1

= 1.814.400 × 2 × 1

= 3.628.800 × 1

= 3.628.800 √

Ditanya :

hasilnya ...?

Dijawab :

5y × y! - 9y

= 5(10) × 10! - 9(10)

= 5 × 10 × 10! - 9(10)

= 50 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 50 × 90 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 50 × 720 × 7 × 6 × 5 × 4 × 3 × 2 × 1

= 50 × 5.040 × 6 × 5 × 4 × 3 × 2 × 1

= 50 × 30.240 × 5 × 4 × 3 × 2 × 1

= 50 × 151.200 × 4 × 3 × 2 × 1

= 50 × 604.800 × 3 × 2 × 1

= 50 × 1.814.400 × 2 × 1

= 50 × 3.628.800 × 1

= 50 × 3.628.800 - 9(10)

= 50 × 3.628.800 - 9 × 10

= 50 × 3.628.800 - 90

= 181.440.000 - 90

= 181.439.910 √

Keterangan :

→ hasil dari 5y × y! - 9y adalah 181.439.910

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