College

Solve [tex]3x^2 - 1 = 47[/tex] using the square root property.

A. [tex]x = 16, -16[/tex]

B. [tex]x = 7, -7[/tex]

C. [tex]x = 2, -2[/tex]

D. [tex]x = 4, -4[/tex]

Answer :

Final answer:

To solve the equation 3x² - 1 = 47 using the square root property, isolate the variable x and apply the square root property to find the solutions x = 4 and x = -4.


Explanation:

To solve the equation 3x² - 1 = 47 using the square root property, we need to isolate the variable x and then apply the square root property. First, we add 1 to both sides of the equation to get 3x² = 48. Then, we divide both sides by 3 to obtain x² = 16. Finally, we take the square root of both sides, remembering to include both the positive and negative square root:




  1. x = ∖sqrt{16} = ∖4

  2. x = -∖sqrt{16} = -4



Therefore, the solutions to the equation 3x² - 1 = 47 are x = 4 and x = -4.


Learn more about solving quadratic equations here:

https://brainly.com/question/30398551


Final answer:

To solve the equation 3x² - 1 = 47 using the square root property, isolate the variable by moving the constant to the other side of the equation. Divide both sides of the equation by 3 to isolate the variable. Take the square root of both sides of the equation to solve for x.

Explanation:

In order to solve the equation 3x² - 1 = 47 using the square root property, we need to isolate the variable by moving the constant to the other side of the equation.

Step 1: Add 1 to both sides of the equation to get 3x² = 48.

Step 2: Divide both sides of the equation by 3 to isolate the variable, which gives us x² = 16.

Step 3: Take the square root of both sides of the equation to solve for x. The square root of 16 is 4, so we have two possible solutions: x = 4 and x = -4.