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Solve the equation using the method of completing the square 2x^2+16x-8=0

Solve the equation using the method of completing the square 2x^2+16x-8=0
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Solve the equation using the method of completing the square 2x^2+16x-8=0

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User Jwpol
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8.6k points

2 Answers

3 votes

Answer:

c.

Explanation:

answered
User RcMan
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8.4k points
5 votes

2x^2+16x-8=0\\ x^2+8x-4=0\\ x^2+8x+16-20=0\\ (x+4)^2=20\\ x+4=√(20) \vee x+4=-√(20)\\ x=-4+2\sqrt5 \vee x=-4-2\sqrt5
answered
User Colin Ricardo
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8.4k points
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