Answer:
x = - 12 , x = 13
Explanation:
x² - x = 156 ( subtract 156 from both sides )
x² - x - 156 = 0 ← in standard form
(x - 13)(x + 12) = 0 ← in factored form
equate each factor to zero and solve for x
x + 12 = 0 ⇒ x = - 12
x - 13 = 0 ⇒ x = 13
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