Question

If x = 3 + 1 and y = 3 - 1 , then the value of (x2 + y2) is

Answer 1

x=3+1=4

y=3-1=2

x2+y2=4(2)+3(2)

=8+6

=14

Answer 2

Answer:

3+1×2+3-1×2

4×2+2×2

8+4

12