Question

Respostas com calculos pfv

Urgente!!

Answer 1

a) $[x^{2} + y^{2} - x^{2} - y^{2}]^{2} 0</p> <p>b)[tex] x^{2} + y^{2} - (x^{2} - y^{2}) x^{2} + y^{2} - x^{2} + y^{2} 2y^{2}$

c)$2x^{2} - 1^{2} - (x^{2} - 3^{2}) + 5 (2^{2} - x^{4}) - (3^{2} - x^{2})$