Question

Tolong di jawab 2 soal ini, contoh jawaban seperti di gambar.

1. 3x² - 10x + 8 = 0
2. 2x² + x - 10 = 0​

Answer 1

Verified answer

1. 3x^2 - 10x + 8 = 0

a = 3 | b = -10 | c = 8

a × c = 24 | b = -10

-6 × -4 = 24

-6 + -4 = -10

(x - 6/3)(x - 4/3)

(x - 2)(x - 4/3)

x = 2 | x = 4/3

HP = {2, 4/3}

2. 2x^2 + x - 10 = 0

a = 2 | b = 1 | c = -10

a × c = - 20 | b = 1

5 × -4 = -20

5 + -4 = 1

(x + 5/2)(x - 4/2)

(x + 5/2)(x - 2)

x = -5/2 | x = 2

HP = {-5/2, 2}