September 2023 1 2 Report
3. Simplifica las expresiones siguientes.
a)-(-2x2 + a?) - 3a2 + (-3a2 - (x2 - a)] =
b)-[5 - (6xy - z) + 2xy +7z + 3] + 5xy =
c) 5a - {3b-8C - [a + 2c + 6b - (b-c) - 3a] - 5c} =
d) 8x2y - {4xy2 - [2x2y + (-5xy2 - 3x2y) - 4xyz] + 2x2y} =

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