Question

simplify if needed and find the value of the following expression when x = 2 and y =- 2. x2-xy+ ypower2​

Answer 1

We simply substitute x=1,y=2 in the given expression x2+y2 as shown below:

x2+y2=(1)2+(2)2=1+4=5

Hence, the value of the expression x2+y2=5 when x=1,y=2.

Answer 2

Answer:

4

Step-by-step explanation:

x2-xy+ypower2

2×2-2×-2+-2^2

4-4+4

0+4

=4 solved