Question

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What are the roots of the equation?

x2−x−42=0

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x =
and
x =

Answer 1

Explanation:

Answer 2

x = - 6 and x = 7

given x² - x - 42 = 0 ← quadratic in standard form

(x - 7 )(x + 6) = 0 ← in factored form

equate each factor to zero and solve for x

x - 7 = 0 ⇒ x = 7

x + 6 = 0 ⇒ x = - 6