Page 22 - Modul Pengembangan _Neat
P. 22
Contoh :
Tentukan hasil dari (2 − 5) ( + 3)
Metode FOIL (The FOIL Method)
F Fist
O Outer
I Inner
L Last
2y − 5 + 3 = 2 × + 2 × 3 + −5 × + −5 × 3
2
= 2 + 6 + −5 + −15
2
= 2 + 6 − 5 − 15
= 2 + − 15
2
Metode Pemisahan (The Splitting Method)
2 − 5 + 3 = 2 + 3 + −5 + 3
2
= 2 + 6 + −5 + (−15)
2
= 2 + 6 − 5 − 15
= 2 + − 15
2
Metode Muka Senyum (The Smile Face Method)
2 − 5 + 3 = 2 × + −5 × 3 + 2 × 3 + (−5) ×
15