if a square of a number is added to 3 times a number. The sum is 28. Find the positive number
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if a square of a number is added to 3 times a number. The sum is 28. Find the positive number
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Answer:
the positive number is 4
Step-by-step explanation:
formulate the equation using the given
3n + n2 = 28
n2 + 3n - 28 = 0
(n + 7)(n -4)=0
getting the factors
n + 7 = 0
n = -7
n - 4 = 0
n = 4