Question

－﹙﹣4.5﹚÷﹙1/2－0.25﹚²－3.5÷│﹣0.25│²＝

Answer 1

－﹙﹣4.5﹚÷﹙1/2－0.25﹚²－3.5÷│﹣0.25│²

=4.5÷(1/2-1/4)²-3.5÷(1/4)²

=4.5×16-3.5×16

=(4.5-3.5)×16

=1×16

=16;

已知│a│＝3,│b│＝5,且a＜0,b＞0,

∴a=-3;b=5;

∴a³＋2b的值.

=-27+10

=-17;

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