Can someone tell me the answer??
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( 2 h² + 3 k²) (2 h² + 3k²)
14 7 14 7
=>{(2/14) ×h²}² - {(3/7 )×k²}²
=>(h²/7)² - (3k²/7)²
=>h⁴/49 - 9k⁴/49
=>(h⁴-9k⁴)/49. (Ans)
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