4132的2次方-4132*4132?
25/48的二次方-25/48*49/48
k*(-351)= 12855
(k+9)*351?
k*2/5*351?
2005-11-09 16:31:07 · 4 個解答 · 發問者 Anonymous in 科學 ➔ 數學
更正....是4132*5132
2005-11-09 16:43:20 · update #1
第一題:41322-4132*5132=4132*4132-4132*51324132(4132-5132)------反分配律ac+bc=c(a+b)=4132*(-1000)=-4132000第二題:(25/48)2-(25/48)(49/48)=(25*25-25*49)/482=25*(-24)/(48*48)------反分配律ac+bc=c(a+b)=-25/96第三題:-351k=12855k=-12855/351(第一小題)k+9=(-12855/351)+9=(-12855+351*9)/351=-9696/351(k+9)*351=-9696(第二小題)k*2/5=(-12855/351)*2/5=-5142/351(k*2/5)*351=-5142
2005-11-09 16:47:52 · answer #1 · answered by lastleaf 6 · 0⤊ 0⤋
41322 - 4132x4132 = 0(25/48)2 - (25/48)x(49/48)= (25/48)[(25/48) - (49/48)]= (25/48)(-24/48)= -25/96Kx(-351) = 12855 K = -12855/351(K + 9)x351 = - 9696Kx(2/5)x351 = - 5142
2005-11-09 16:49:40 · answer #2 · answered by Frank 7 · 0⤊ 0⤋
1. =4132*(4132-5132)=-41320002.[(25/48)^2]-[(25*49)/(48*48)]=[25*(25-49)]/(48*48)=[25*(-24)]/(48*48)=-25/963.k=(-12855/351)=>(k+9)*351=351k+9*351=-12855+3159=-9696k*2/5*351=351k*2/5=-5142
2005-11-09 16:41:12 · answer #3 · answered by Anonymous · 0⤊ 0⤋
25/48的二次方=(25/48)*(25*48)喔!!
k*(-351)= 12855
k=-12504
(k+9)*351= - 4385745
k*2/5*351~~~題目不清楚
如果
(k*2)/(5*351)
=-14.249572649572649572649572649573
但是如果
k*(2/5)*351
=-1755561.6
2005-11-09 16:41:12 · answer #4 · answered by ? 4 · 0⤊ 0⤋