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Show that x = -3 is a solution of x^2 + 6x + 9 = 0.

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Show that x = -3 is a solution of x2 + 6x + 9 = 0.

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Best answer

Put x = –3 in the equation.

(–3)2 + 6(–3) + 9

9 – 18 + 9

= 0

Hence it is a solution

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