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Aleonysh [2.5K]
3 years ago
5

When 3 times a number is added to it's square the total is 18​

Mathematics
2 answers:
Maurinko [17]3 years ago
4 0

Answer:

x(the number)=3

Step-by-step explanation:

3×3+3squared = 18

olga55 [171]3 years ago
3 0

Answer:

3x + x^2 = 18

x^2 + 3x - 18 = 0

(x + 6)(x - 3) = 0

x + 6 = 0

<u>x = -6</u>

x - 3 = 0

<u>x = 3 </u>

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