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aev [14]
3 years ago
10

If 18 is subtracted from twice the square of an integer, the

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
5 0

Answer:

-3/2

Step-by-step explanation:

Let x = the integer:

2x^2 - 18 = 9x

2x^2 - 9x - 18 = 0

Now either factor that or use the quadratic formula if you're lazy like me.

x = -3/2 and 6, so x must be 6 because it has to be an integer.

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