1 Answers
(3x2 + 7y2)2 - 2(3x2+ 7y2)(3x2 - 7y2) + (3x2 - 7y2)2
= {(3x2 + 7y2) - (3x2 - 7y2)}2
= (3x2 + 7y2- 3x2 + 7y2)2
= (14y2)2
= 196y4
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Answered
(3x2 + 7y2)2 - 2(3x2+ 7y2)(3x2 - 7y2) + (3x2 - 7y2)2
= {(3x2 + 7y2) - (3x2 - 7y2)}2
= (3x2 + 7y2- 3x2 + 7y2)2
= (14y2)2
= 196y4