数学
,帮忙解三元二次方程组 748=a(1+m)方+k 800=am方+k 536=a(2+m)方+k748=a(1+m)方+k800=am方+k536=a(2+m)方+k

2019-05-28

,帮忙解三元二次方程组 748=a(1+m)方+k 800=am方+k 536=a(2+m)方+k
748=a(1+m)方+k
800=am方+k
536=a(2+m)方+k
优质解答
748=a(1+m)方+k (1)
800=am方+k (2)
536=a(2+m)方+k (3)
(1)-(2)得 2am+a=-52 (4)
(3)-(1)得2am+3a=-212 (5)
(5)-(4)得a=-80带入(4)得m=-27/40 带入(2)得k=16729/20
748=a(1+m)方+k (1)
800=am方+k (2)
536=a(2+m)方+k (3)
(1)-(2)得 2am+a=-52 (4)
(3)-(1)得2am+3a=-212 (5)
(5)-(4)得a=-80带入(4)得m=-27/40 带入(2)得k=16729/20
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