if (x+y) = 9 and xy = 16, find the value of x square + Y square
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Answered by
1
(x+y) =9
(x+y) ^2 =81
x^2 +y^2 +2xy=81
x^2 +y^2 +2(16)=81 (x*y=16)
x^2 +y^2 +32=81
x^2 +y^2 =49
(x+y) ^2 =81
x^2 +y^2 +2xy=81
x^2 +y^2 +2(16)=81 (x*y=16)
x^2 +y^2 +32=81
x^2 +y^2 =49
Answered by
5
- if (x -y) = 9 and xy = 16, find the value of x square + Y square
(x - y) = 9
xy = 16
(x² + y²) = ?
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