X²+2x-15=0 hasil ny ​

(x + 5)(x – 3) = 0

x = -5

x = 3

Hp = { -5,2 }

Jawaban:

x = -5 dan × = 3

Penjelasan dengan langkah-langkah:

x² + 2x – 15 = 0

pertama"

( 1 × ( -15)) = … × ….

2 = … + ….

5 dan –3 karena,

5 × (-3) = ( 1 × (-15))

5 + (-3) = 2

jadi,

x² + 2x – 15 = 0

(x+5) (x-3)

x = –5 dan x = 3

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