FAKTORIAL.pptx
- 4. CONTOH SOAL
Hitunglah nilai dari
Jawab : 3 ! X 2 ! = (3.2.1.)x(2.1)=12
7!
4!
𝑗𝑎𝑤𝑎𝑏 ∶
7!
4!
=
7.6.5.4!
4!
= 210
8!
3! 𝑥 6!
𝑗𝑎𝑤𝑎𝑏 ∶
8!
3! 𝑥 6!
=
8.7.6!
3! .6!
=
56
6
=
28
3
𝑗𝑎𝑤𝑎𝑏 ∶
𝑥!
( 𝑥 − 2 )!
= 6
𝑥 ( 𝑥 −1 )( 𝑥 −2 )!
( 𝑥 −2 )!
= 6
x( x – 1 )= 6
𝑥2
− 𝑥 − 6 = 0
( x – 3 ) ( x + 2 ) = 0
Jadi x = 3 atau x + - 2