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3 years ago

What is the solution to 2x2+8x=x2-16?

Mathematics

1 answer:

lisov135 [29]3 years ago

3 0

Answer:

x = -4

Step-by-step explanation:

Subtract x^2-16 from both sides:

x^2 +8x +16 = 0

(x +4)^2 = 0 . . factor

x +4 = 0 . . . . . take the square root

x = -4

The one real solution is x = -4.

_____

<em>Additional comment</em>

As you can see from the factoring, the root has multiplicity 2.

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