Question

12. x2 - 4x - 6 = x2 + 4x – 2

Answer 1

• The required value of x is - 1/2.

Explanation:

We have to find the value of x from the given equation.

• x² - 4x - 6 = x² + 4x – 2

Step: Add the like terms.

• x² - 6 +2 = x² + 4x + 4x

Step: Add the unlike terms.

• x² - 6 + 2 = x² + 4x + 4x
• x² - 4 = x² + 8x

Step: Arrange in simplest form.

• x² - 4 = x² + 8x
• x² - x² = 8x + 4
• 0 = 8x + 4
• - 4 = 8x
• 8x = - 4
• x = - 4/8
• x = -½

Therefore, the required value of x is - 1/2.