×pangkat 2+2 ×-15=0​

Jawab:

Penjelasan dengan langkah-langkah:

x² + 2x – 15 = 0

(x – 3)(x + 5) = 0

x₁ = 3     dan     x₂ = -5

x² + 2x – 15 = 0

(x + 5)(x – 3) = 0

#x + 5 = 0

x = -5

#x – 3 = 0

x = 3

Hp = { -5 , 3 }

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