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Mathematics

1 answer:

Art [367]3 years ago

5 0

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What equation best represents the following sentence?

nikdorinn [45]

Answer: n + 2 = 2n

Step-by-step explanation:

sum = add

number and two = n, 2

twice the number = 2 x n

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That's a quadratic equation in $x^2$ , which means we get an extra square root and $\pm$ at the end.

$x^4 - x^2 - 42 = 0$

We factor,

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$x^2 = 7 \quad \textrm{or} \quad x^2 = -6$

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