use the Quadratic formula to solve: x^2 + 10 =-7x

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14-08-2017
Mathematics

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use the Quadratic formula to solve: x^2 + 10 =-7x

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Banabanana Banabanana · Answer 1 · 2017-08-14T00:10:49+02:00

Banabanana Banabanana

14-08-2017

[tex]x^2 + 10 =-7x\\x^2 +7x+ 10 =0 \\\\ x= \cfrac{-7б \sqrt{7^2-4*1*10} }{2}=x= \cfrac{-7б \sqrt{49-0} }{2}= \cfrac{-7б 3 }{2} \\ \\ x=\cfrac{-7- 3 }{2}=-5\\\\ x=\cfrac{-7+ 3 }{2}=-2[/tex]

Answer: x=-5, x=-2

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sydbid123 sydbid123 · Answer 2 · 2017-08-14T00:13:38+02:00

sydbid123 sydbid123

14-08-2017

the answer are -5 and -2

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