Solve the following quadratic equation for all values of xx in simplest form.

5, left parenthesis, x, squared, minus, 7, right parenthesis, minus, 1, equals, 9
5(x
2
−7)−1=
9

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
1 hour ago

To solve the quadratic equation \( 5(x^2 - 7) - 1 = 9 \), we can follow these steps:

  1. Start by simplifying the equation: \[ 5(x^2 - 7) - 1 = 9 \]

  2. Add 1 to both sides: \[ 5(x^2 - 7) = 10 \]

  3. Divide both sides by 5: \[ x^2 - 7 = 2 \]

  4. Add 7 to both sides: \[ x^2 = 9 \]

  5. Now, take the square root of both sides: \[ x = \pm 3 \]

Therefore, the solutions for the quadratic equation are: \[ x = 3 \quad \text{and} \quad x = -3 \]