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