expand (3x – 1/3x)² please give me answer fast
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Answer:
7x² + 1/9x²
Step-by-step explanation:
(3x)² + (1/3x)² - 2 × 3x × 1/3x
= 9x² + 1/9x² - 2x²
= 7x² + 1/9x²
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