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1 vote
when 40 is subtracted from the square of a number, the result is 3 times the number. Find the positive solution.​

User Jeguyer
by
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1 Answer

4 votes

Answer:

5

Explanation:

Let x be that number.

(x^2) - 40 = 3x

x^2 - 40 = 3x

x*2-3x-40=0

(x-5)(x+8)=0

x=5

User DomAyre
by
7.6k points

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