Penjelasan dengan langkah-langkah:
x² - (a + 1)x - a - 6 = 0
(1)x² + (-a - 1)x + (-a - 6) = 0
a = 1 , b = -a - 1 , c = -a - 1
Mencari nilai a.
-b/a = X1 + X2
-(-a - 1)/1 = 4
(a + 1) = 4
a = 4 - 1
a = 3 ✓
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Verified answer
Penjelasan dengan langkah-langkah:
x² - (a + 1)x - a - 6 = 0
(1)x² + (-a - 1)x + (-a - 6) = 0
a = 1 , b = -a - 1 , c = -a - 1
Mencari nilai a.
-b/a = X1 + X2
-(-a - 1)/1 = 4
(a + 1) = 4
a = 4 - 1
a = 3 ✓