数学多项式的因式分解(1)6.3×2012+56×201.2-1.9×2012(2) 6.48×26+64.8×17.4
1个回答
1...(6.3+5.6-1.9)*2012=20120
2...(2.6+17.4-20)*68.4=0
3...3x^2=5x+3
原式=-(12x^2-20)
=-(20x-8)
相关问题
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(1×3×24+2×6×48+3×9×72)÷(1×2×4+2×4×8+3×6×12)=?
(2012+2011×2013)/(2012×2013-1)+(6×4014+9×4016+1/2)/(3×4014+3
简便运算的数学题1、3.26×4.5+5.2×3.26+9.7×6.742、15.8×5.8+4.2×4.2+11.6×
1.(1.3×3.9×11.7+3×9×27+1/17×3/17×9/17)/(1.3×2.6×3.9+3×6×9+1/
1/2×3+1/4×6+1/6×8+…+1/48×50
计算1×2×4+2×4×8+3×6×12+…/1×3×9+2×6×18+3×9×27﹢…
4.2×201.2+0.87×2012-2.9×201.2怎么简便计算
直接写得数:3/14×2/26=?1/7×21/24=?1/4×1/6=?2/3×1/7=?4/6×2/3=?9/8×6
[1×2+2×4+3×6+4×8+5×10/2×3+4×6+6×9+8×12+10×15].