Jika (18y - 15)pangkat 2 = ay pangkat 2 + by + c , maka nilai a + b + c = ... Tolong dijawab beserta CARA LENGKAP nya yah...thanks

Question

Matematika Diposting : 2017-07-24 Diupdate : 2023-11-26 johanaelizabeth

Pertanyaan

Jika (18y - 15)pangkat 2 = ay pangkat 2 + by + c , maka nilai a + b + c = ...

Tolong dijawab beserta CARA LENGKAP nya yah...thanks

Answer 1

(18y-15)²=ay² + by + c
324y² - 270y - 270y + 225 = ay² + by + c
324y²- 540y+ 225 = ay² + by + c
maka a+b+c=324+(-540)+225= 9