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  • 2019 April(B04) Math Question 16

    Quadratic Equations

    - Factoring

    Choice H
    $$x^{2}+3x-54=0$$ $$\Rightarrow (x+9)(x-6)=0$$ $$\Rightarrow x=-9,6$$ $$\Rightarrow -9+6=-3$$

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