Question

if x+y= 12 and xy=14 find the value of x2+y2

Answer 1

Hey maye here is ur solution.....


x²+y²=. (x+y)²-2xy
=12²-2*14
=144-28
=116

Hope this will help you..

Answer 2

(x+y)^2=x^2+y^2+2xy
substituting X square plus y square equals to A
Putting the values
(12)^2=A+2×14
144=A+28
144-28=A
116=A
x^2+y^2=116
* hope this answer helps *