Solve the equation 2x²+ 8x - 1 = 0 by completing the square. Give your answers correct to 2 decimal places.

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Alexander Balabin asked Dec 22, 2023

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Solve the equation

2x²+ 8x - 1 = 0
by completing the square.
Give your answers correct to 2 decimal places.

Mathematics
high-school

Alexander Balabin asked Dec 22, 2023

by Alexander Balabin

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1 Answer

11 votes

Answer:

x = 0.08

Explanation:

2x²+ 8x - 1 = 0

4x + 8x - 1 = 0

12x - 1 = 0

Add 1 to the -1 and to the 0 too

12x = 1

Divide both side

x = 0.08

AndyDunn answered Dec 27, 2023

by AndyDunn

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