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26-07-2017
Mathematics

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3x^2 - 4x - 7 = 0, solve and show your work. :) Brainliest to best answer!

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amirreza688 amirreza688

26-07-2017

Δ=b^2-4ac=16-4*(-7)*3=16+84=100
[tex] x_{1} = \frac{-b+ \sqrt{Δ} }{2a} [/tex]
[tex] x_{2} = \frac{-b- \sqrt{Δ} }{2a} [/tex]
x1=(4+10)/6=7/3
x2=(4-10)/6=-1

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