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Completing the square

x^2-5x-14

Sagot :

completing the square is normally used when the equation is equal to zero
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if we were to factor, we would get (what 2 number multiply to -14 and add to -5 then answer is -7 and 2)
(x+2)(x-7)

if this was set to zero then the number that would work are -2 and 7