[tex]a) (2x + 3y).(2x - 3y)\\\\b) (x + y)^2\\\\c) (2a - b)^2\\\\[/tex]
Fatorar:
[tex]a) 4x^2 - 9y^2\\\\(2x + 3y).(2x + 3y)\\\\b) x^2 + 2xy + y^2\\\\(x + y)^2\\\\c) 4a^2 - 4ab + b^2\\\\(2a - b)^2\\\\[/tex]
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