7 x square + 2 root 14x + 2
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=> 7x² + 2√14x + 2
It can also be written as :-
=> 7x² + 2√214x + 2
=> 7x² + √2√7x + √2√78x + 2
=> √7x(√7x+2) + √2(√7x+√2)
=> (√7x+√2)(√7x+√2)
=> (√7x+√2)²
∴ 7x² + 2√14x + 2 = (√7x+√2)²
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