X-y=3 and xy=28 than find x2+y2=?
Answers
Answered by
1
hlo
( x - y)^2 = x^2 + y^2 -2 xy
( 3 )^2 = x^2 + y^2 - 2× 28
9 = x^2 + y^2 - 56
9 + 56 = x^2 + y^2
65
hope it helps..♥
( x - y)^2 = x^2 + y^2 -2 xy
( 3 )^2 = x^2 + y^2 - 2× 28
9 = x^2 + y^2 - 56
9 + 56 = x^2 + y^2
65
hope it helps..♥
Similar questions