Question

if x+y=4 and xy=3 find the value of x²+y²​

Answer 1

Answer:

Step-by-step explanation:

I have given the formula for x²+y² below

x²+y²= (x+y)² -2xy

given x+y=4 and xy=3

substituting the values

we get x²+y²=(4)²-2(3)

⇒16-6=x²+y²

⇒x²+y²=10

hope this helps you.