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Question Number 16918 by rustylee last updated on 28/Jun/17

2x2+9x=10

$$\mathrm{2}{x}\mathrm{2}+\mathrm{9}{x}=\mathrm{10} \\ $$

Answered by Joel577 last updated on 28/Jun/17

2x^2  + 9x − 10 = 0  x_(1,2)  = ((−9 ± (√(81 + 80)))/4)          = ((−9 ± (√(161)))/4)

$$\mathrm{2}{x}^{\mathrm{2}} \:+\:\mathrm{9}{x}\:−\:\mathrm{10}\:=\:\mathrm{0} \\ $$$${x}_{\mathrm{1},\mathrm{2}} \:=\:\frac{−\mathrm{9}\:\pm\:\sqrt{\mathrm{81}\:+\:\mathrm{80}}}{\mathrm{4}} \\ $$$$\:\:\:\:\:\:\:\:=\:\frac{−\mathrm{9}\:\pm\:\sqrt{\mathrm{161}}}{\mathrm{4}} \\ $$

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