Question

find the value of x²+y² when: x -y= 11 and xy=17​

Answer 1

Answer:

x²+y²=155

Step-by-step explanation:

x-y=11

Squaring on both the sides

(x-y)²=(11)²

x²+y²-2xy=121

x²+y²-2(17)=121

x²+y²-34=121

x²+y²=121+34

x²+y²=155

Therefore, the value of x²+y² is 155.

Answer 2

Answer:

(x+y)²-2xy

x²+y²-2xy

(x+y)(x-y)-2xy

x+y(11)-2×17

11(x+y)-34

11x+11y-34

Step-by-step explanation:

see if its correct...i just tried!! sorry if its wrong...pleasure if it goes correct...