14-03-2021
Mathematics

contestada

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

Respuesta :

amy5894 amy5894

14-03-2021

Answer:

x(the number)=3

Step-by-step explanation:

3×3+3squared = 18

Answer Link

iamtheonetheonlysele iamtheonetheonlysele

14-03-2021

Answer:

3x + x^2 = 18

x^2 + 3x - 18 = 0

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

x + 6 = 0

x = -6

x - 3 = 0

x = 3

Answer Link

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