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ch4aika [34]
3 years ago
10

1.Find the positive root of 3x² + 6 =9.​

Spanish
1 answer:
inessss [21]3 years ago
3 0

Sqrt ( 3x^2 + 6 ) = 9

Do the square bothsides of the

Equation.

3x^2 + 6 = 81

3x^2 = 81 - 6

3x^2 = 75

Divide bothsides with 3

3x^2 / 3 = 75/ 3

x^2 = 25

Now ,

x = sqrt ( 25 )

x = + or - 5

But we need pisitive root ,

therefore ,

x = 5

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