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When the sum of five and twice a positive number is subtracted from the square of the number ,0 results. Find the number

User Janneb
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1 Answer

4 votes

Answer:

4

Explanation:

The equation is

x^2 - (2x + 8) = 0 where x is the number to be found.

removing the parentheses by distributing the negative:-

x^2 - 2x - 8 = 0

(x - 4)(x +2) = 0

x = 4, -2.

The value of x must be 4 because it is positive.

User MTuran
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