Question

Practice Set 6.1
1. Factories
1 )x2+9x+18


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Answer 1

Answer:

${x}^{2} + 9x + 18 = 0 \\ {x}^{2} + 3x + 6x + 18 = 0 \\ x(x + 3) + 6(x + 3) = 0 \\ (x + 3)(x + 6) = 0 \\ x = - 6 \: (or) \: - 3$

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