化简-(2a²+5)-(3a²-2)-2(-4a²-1)

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化简-(2a²+5)-(3a²-2)-2(-4a²-1)
化简-(2a²+5)-(3a²-2)-2(-4a²-1)

化简-(2a²+5)-(3a²-2)-2(-4a²-1)
-(2a²+5)-(3a²-2)-2(-4a²-1)
=-2a²-5-3a²+8a²+2
=3a²-3

-(2a²+5)-(3a²-2)-2(-4a²-1)
=-5a²-3+8a²+2
=3a²-1