Question

diketahui persamaan kuadrat x² + 6x - 16 = 0 Tentukan nilai dari.

A. X1 + X2

B. X1 × X2

C. X1² + X2​

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

x^2 + 6x - 16 = 0

(x + 8)(x - 2) = 0

x = -8 atau x = 2

x1 + x2 = -8 + 2 = -6

x1x2 = -8(2) = -16

x1^2 + x2^2 = 64 + 4 = 68

Answer 2

Jawaban:

68

Penjelasan dengan langkah-langkah:

x² + 6x - 16 = 0

(x+8)(x-2) = 0

x = -8 atau

x = 2

x1 + x2 = -8 + 2 = -6

x1x2 = -8(2) = -16

x1² + x2² = 64 + 4 = 68