(p²+q)²-4p²q²=
(p²+q)²-4p²q²=
其他人气:570 ℃时间:2020-03-28 18:07:00
优质解答
(p²+q)²-4p²q²=(p²+q-2pq)p²+q+2pq)1.25×14²-125×8.6²==125x1.4²-125x8.6²=125x(1.4+8.6)(1.4-8.6)=125x10x(-7.2)=-9000
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