Jawab:
faktorisasi
Penjelasan dengan langkah-langkah:
p(x) = x⁴ - 4x² - 5
misal x²= y
p(x) = y² - 4y - 5 = (y - 5)(y + 1)
a) p(x) = x⁴ -4x² - 5 = (x² - 5)(x² + 1)
b) p(x) = 0
x⁴ -4x² - 5 = 0
(x² - 5)(x² + 1) =0
x² = 5 atau x² = - 1
x1 = √5 , x2 = -√5
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Verified answer
Jawab:
faktorisasi
Penjelasan dengan langkah-langkah:
p(x) = x⁴ - 4x² - 5
misal x²= y
p(x) = y² - 4y - 5 = (y - 5)(y + 1)
a) p(x) = x⁴ -4x² - 5 = (x² - 5)(x² + 1)
b) p(x) = 0
x⁴ -4x² - 5 = 0
(x² - 5)(x² + 1) =0
x² = 5 atau x² = - 1
x1 = √5 , x2 = -√5