Question

Ka bantu jawab soal​

Answer 1

Jawab:

D. 26

Penjelasan dengan langkah-langkah:

Answer 2

Jawaban:

26(D)

Penjelasan dengan langkah-langkah:

persamaan ax² - (a + 5)x + 8 = 0

a = a

b = -(a + 5)

c = 8

misal akarnya α dan β

a = 2b

b = b

a.b = c/a

b . 2b = 8/a

2b² = 8/a

b² = 8/2a

b² = 4/a

a + b = -b/a

b + 2b = -(-(a+ 5))/a

3ab = a + 5

9a²b² = (a + 5)²

9a².(4/a) = a² + 10a + 25

9a² . 4/a = a² + 10a + 25

36a = a² + 10a + 25

0 = a² - 26a + 25

0 = (a - 25)(a - 1)

a1 = 25 /// a2 = 1

a1 + a2 = 25 + 1 = 26( D )