Question

Evaluate x² + y²+2xy if x=1,y=-1​

Answer 1

Step-by-step explanation:

x=1

y=-1

x²+y²+2xy

(1)²+(-1)²+2(1)(-1)

1+1-2

0

Answer 2

hey mate :-

Evaluate x² + y²+2xy if x=1,y=-1

Solution :-

given here

=x²+y²+2xy

now put value of x and y

we get

=1²+(-1)²+2×1×-1

=1+1-2

=2-2

=0

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