if X + Y= 5 and x - Y = 1 find 2 (X2 + Y2)
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1
Answer:
The answer is 20
Step-by-step explanation:
If X+Y=5. and x-Y =1
then add both eqn.
X+Y =5
+ X-Y = 1
=2x=6
X=6/2
X =3
just like that Y=2
put this values of x and y in eqn 2(X2+Y2)
you Will get 2(6+4)
that is 2(10)=20
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