简求
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化简求值题及答案40道,初中化简求值练习题及答案
2(2a²+2ab)-(3a²+4ab-b²),其中a=2,b=-1 1/4(a+b)²-6(a-b)+3/4(a+b)²+6(a-b) 5(a-b)²-3(a-b)²-7(a-b)-(a-b)²+7(a-b) 1/2a²-1/4b+3/2a²-3/4b-a² -5yx²+4xy²-2xy+6x²y+2xy+5 16m+25-40m+34m (4+2x)+(…
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化简求值题及答案40道,给我三十道化简求值的式子和答案
初一的化值题及40道:(4×2-8x+5)-(x3+3×2-6x+2). 72.(0.3×3-x2y+xy2-y3)-(-0.5×3-x2y+0.3xy2). 73.-{2a2b-[3abc-(4ab2-a2b)]}. 74.(5a2b+3a2b2-ab2)-(-2ab2+3a2b2+a2b). 75.(x2-2y2-z2)-(-y2+3×2-z2)+(5×…
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化简比100道带答案,小学求比值、化简比各30道
求比值 80:24 0.5:0.2 0.15:21 36:18 13:91 3:12 1.01:101 21:24 36:72 20:40 89.5:2 10.5:21 3.14:28.26 41.23:4123 15:0.12 10:120 123:3 65:13 3:1 42:54 化简比80:24 0.5:0.2 0.15:21 36:18 13:91…
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化简求值题,化简求值的题五道,带答案?
1化值题、已知A,B是方程x^2+2x-5=0的两个实数根, 求(A^2+2AB+2A)(B^2+2AB+2B)的值. 由A,B是方程x^2+2x-5=0的两个实数根得: AB=-5,A+B=-2 A^2+2AB+2A)(B^2+2AB+2B) =AB(A+2B+2)(B+2A+2) =-5(-2+B+2)(-2+A+2) =-5AB =25 2、1/2(x…