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yanalaym [24]
2 years ago
11

What is the solution of radical x+12 equal x

Mathematics
2 answers:
Vlad [161]2 years ago
6 0

Answer:

x = 4 or -3

Step-by-step explanation:

\sqrt{x+12} = x

To get rid of the square root, we need to square both sides.

x + 12 = x²

Get all variables/ integer on to one side.

0 = x² - x - 12

Use any method to solve this quadratic equation. I'm going to use the completing the square method.

12 = x² - x

12 + 0.25 = x² - x + 0.25

\sqrt{12.25} = \sqrt{(x - 0.5)^2}

±3.5 = x - 0.5

x = 0.5 ± 3.5

x = 4 or -3

DIA [1.3K]2 years ago
3 0
Sqrt(x+12)=x
*square root both sides
x+12=x^2
*subtract over x and 12
x^2-x-12=0
*factor using diamond method
(x-4)(x+3)=0
x=4,-3
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