Equation: (x+7)(x+2)=84
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Originally Posted by runner940 Equation: (x+7)(x+2)=84 ohh, i think i can help $\displaystyle (x+7)(x+2)=84$ $\displaystyle x^2+14+9x-84=0$ $\displaystyle x^2+9x-70$ factors of 70 that add up to 9: 14, -5 $\displaystyle (x+14)(x-5)=0$ $\displaystyle x=5$ or $\displaystyle x=-14$
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