Hey here is the answer to ur question...
5x^2-2xy+y^2
=>5*(-2)^2-2*-2*3+(3)^2
=>5*4+12+9
=>20+12+9
=>41
Hope this helps u....!!!
The last one
You’re completing the square here so you have to find (1/2b)^2. In this case it’s 1. So you have to add 1 to both sides. Then you have to solve for it
It becomes
(x-1)^2 = -7
Then you have to find the square root
(x-1) = √-7
x-1 = √7 √-1
x-1= ± i √7
x= 1 ±i √7
That’s your answer and d is the only one that matches with it