Question

Find the value of ∶ x+3 x−3 + x−3 x+3 = 2 1 2 .

Answer 1

Answer:

x = 12.25

Step-by-step explanation:

x² - (3)² + x² - (3)² = 212

or , x² - 9 + x² - 9 = 212

or , 2x² - 18 = 212

or , 2x² = 230

or , x² = 150

or , x = root 150

or , x = 12.25