If x-y=9 and xy=2,find the value of (x square + y square)
1 answer:
Answer:
x² + y² = 85
Step-by-step explanation:
Using the expansion
(x - y)² = x² + y² - 2xy , then
x² + y² - 2xy = (x - y)² ( add 2xy to both sides )
x² + y² = (x - y)² + 2xy ← substitute given values
= 9² + 2(2)
= 81 + 4
= 85
You might be interested in
Answer:
I drawing nyo po tapos Yun na madali Lang yan
Answer:
Step-by-step explanation: <1= 53+47=100/2=50 degrees
<2= 180-50=130 degrees
Answer:
72
Step-by-step explanation:
A = bh
1440 = b * 32
1440/32 = 45
1440 = 45 * 32
b = 45
Here is the graph. (I got it from desmos.com...its a good graphing site) I hope this helps love! :)