初中数学化简求值题50道以上

2024-10-30 15:04:43
推荐回答(3个)
回答1:

x-(5x-5y)-y=______.

23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.

-7x2+6x+13x2-4x-5x2=______.

2y+(-2y+5)-(3y+2)=______.

(2x2-3xy+4y2)+(x2+2xy-3y2)=______.

2a-(3a-2b+2)+(3a-4b-1)=______.

-6x2-7x2+15x2-2x2=______.

2x-(x+3y)-(-x-y)-(x-y)=______.

2x+2y-[3x-2(x-y)]=______.

5-(1-x)-1-(x-1)=______.

(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.

已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.

已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.

若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______.

回答2:

骚年,我觉得你还是自己推比较好,脚踏实地,才是实实在在的,不要永远的依赖网民

回答3:

题目呢
??