find the value of x²+y² when: x -y= 11 and xy=17
Answers
Answered by
6
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.
Answered by
1
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...
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