3 years ago

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

2 answers:

8 0

Simplify and solve quadratic equation:

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

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

True [87]3 years ago

4 0

Answer:

(-4,-4)

Step-by-step explanation:

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