Question

X^2 - x - a(a + 1) = 0​

Answer 1

Answer:

x = - a or x = a + 1

Step-by-step explanation:

x² - x - a(a + 1) = 0

x² - (a + 1)x + ax - a(a + 1) = 0

x { x - (a + 1) } + a { x - (a + 1) } = 0

(x + a) { x - (a + 1) } = 0

x + a = 0 or x - (a + 1) = 0

x = - a or x = a + 1

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