alexisjordn02 alexisjordn02

07-02-2018
Mathematics

contestada

What is the only solution of 2x2 + 8x = x2 – 16?

Respuesta :

mathmate mathmate

07-02-2018

Simplify and solve quadratic equation:

[tex]2x^2+8x=x^2-16 => x^2+8x+16 => (x+4)^2=16 => x={-4,-4}[/tex]
So numerically the only solution is x=-4.

However, mathematically, there are two solutions, {-4,-4}, or x=4,multiplicity 2.

Answer Link

amin282 amin282

16-01-2020

Answer:

(-4,-4)

Step-by-step explanation:

Answer Link

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