Question 1

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Se dau expresiile algebrice:

E 1 left parenthesis x comma y right parenthesis space equals space left parenthesis space x space plus space y space plus 2 space right parenthesis squared space minus space left parenthesis space x plus space 4 space right parenthesis squared space minus space left parenthesis space y space plus space 5 space right parenthesis squared
E 2 left parenthesis x comma y right parenthesis space equals space left parenthesis space 2 x space minus space y space minus space 2 space right parenthesis to the power of 2 space end exponent minus space left parenthesis space 2 x space minus space 4 space right parenthesis space minus space left parenthesis space y space minus space 5 space right parenthesis squared
E 3 left parenthesis x comma y right parenthesis space equals space left parenthesis space x space minus 3 y space plus 2 space right parenthesis squared space minus space left parenthesis space minus x space plus space 4 space right parenthesis squared space minus space left parenthesis space 3 y space minus space 5 right parenthesis squared
D u p a space d e s f a c e r e a space p a r a n t e z e l o r space s i space r e d u c e r e a space t e r m e n i l o r space a s e m e n e a space colon space

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