x square plus y square is equal to 34 and xy is equal to 21 by 2 find the value of 2 (x+ y)^2+(x-y)^2
Answers
Answered by
7
x² + y² = 34
xy = 21/2
» 2(x+y)² + (x-y)²
» 2(x²+y²+2xy) + (x²+y²-2xy)
» 2(34 +2(21/2)) + (34-2(21/2))
» 2(34+21) + 34 - 21
» 2(55) + 13
» 110 + 13
» 123
xy = 21/2
» 2(x+y)² + (x-y)²
» 2(x²+y²+2xy) + (x²+y²-2xy)
» 2(34 +2(21/2)) + (34-2(21/2))
» 2(34+21) + 34 - 21
» 2(55) + 13
» 110 + 13
» 123
Similar questions
Social Sciences,
7 months ago
Math,
7 months ago
Math,
1 year ago
Chemistry,
1 year ago
English,
1 year ago