1.已知x^m=4,x^n=8,求x^3m*x^3n+x^3m-n的值 2.计算:(1)-3(a-b)^2*[2(a-b)^2]*[2/3(a-b)] 3.(3a^2+1/2b)(3a3.(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2) 4.(x-y)^3*(x-y)^2-2(x-y)^4*(y-x) 5.若4^m+3*8^m+1/2^4m+7,则m=------- 6.在(ax^2+bx-3)(5x^2-1/2x+8)的
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 11:29:17
![1.已知x^m=4,x^n=8,求x^3m*x^3n+x^3m-n的值 2.计算:(1)-3(a-b)^2*[2(a-b)^2]*[2/3(a-b)] 3.(3a^2+1/2b)(3a3.(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2) 4.(x-y)^3*(x-y)^2-2(x-y)^4*(y-x) 5.若4^m+3*8^m+1/2^4m+7,则m=------- 6.在(ax^2+bx-3)(5x^2-1/2x+8)的](/uploads/image/z/2586431-47-1.jpg?t=1.%E5%B7%B2%E7%9F%A5x%5Em%3D4%2Cx%5En%3D8%2C%E6%B1%82x%5E3m%2Ax%5E3n%2Bx%5E3m-n%E7%9A%84%E5%80%BC+2.%E8%AE%A1%E7%AE%97%3A%281%29-3%28a-b%29%5E2%2A%5B2%28a-b%29%5E2%5D%2A%5B2%2F3%28a-b%29%5D+3.%283a%5E2%2B1%2F2b%29%283a3.%283a%5E2%2B1%2F2b%29%283a%5E2-1%2F2b%29%289a%5E4-1%2F4b%5E2%29+4.%28x-y%29%5E3%2A%28x-y%29%5E2-2%28x-y%29%5E4%2A%28y-x%29+5.%E8%8B%A54%5Em%2B3%2A8%5Em%2B1%2F2%5E4m%2B7%2C%E5%88%99m%3D-------+6.%E5%9C%A8%EF%BC%88ax%5E2%2Bbx-3%29%285x%5E2-1%2F2x%2B8%29%E7%9A%84)
1.已知x^m=4,x^n=8,求x^3m*x^3n+x^3m-n的值 2.计算:(1)-3(a-b)^2*[2(a-b)^2]*[2/3(a-b)] 3.(3a^2+1/2b)(3a3.(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2) 4.(x-y)^3*(x-y)^2-2(x-y)^4*(y-x) 5.若4^m+3*8^m+1/2^4m+7,则m=------- 6.在(ax^2+bx-3)(5x^2-1/2x+8)的
1.已知x^m=4,x^n=8,求x^3m*x^3n+x^3m-n的值 2.计算:(1)-3(a-b)^2*[2(a-b)^2]*[2/3(a-b)] 3.(3a^2+1/2b)(3a
3.(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2) 4.(x-y)^3*(x-y)^2-2(x-y)^4*(y-x) 5.若4^m+3*8^m+1/2^4m+7,则m=------- 6.在(ax^2+bx-3)(5x^2-1/2x+8)的乘积中,不含x^3和x项,则a=___,b=____
1.已知x^m=4,x^n=8,求x^3m*x^3n+x^3m-n的值 2.计算:(1)-3(a-b)^2*[2(a-b)^2]*[2/3(a-b)] 3.(3a^2+1/2b)(3a3.(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2) 4.(x-y)^3*(x-y)^2-2(x-y)^4*(y-x) 5.若4^m+3*8^m+1/2^4m+7,则m=------- 6.在(ax^2+bx-3)(5x^2-1/2x+8)的
1.X ^ 3m = (X ^ m)^ 3=4^3= 64
X^3n= (x^n)^3 =8^3=512
X^ (3m-n)= (X^3m) / (X^n )= 64/8=8
原式= 64*512+8 =……(自己算吧)
2.(1) =(-3 * 2 * 2/3 ) (a-b)^5 = -4( a-b)^5
3 .用平方差公式,和完全平方公式
原式= ((3a^ 2)^2 -(1/2b)^2 )^2 = 81a^8- 9/2 a^4 b^2 + 1/16 b^2
4.=3(x-y)^5
5.这个……你题目有问题
6.都等于0
1.X ^ 3m = (X ^ m)^ 3=4^3= 64
X^3n= (x^n)^3 =8^3=512
X^ (3m-n)= (X^3m) / (X^n )= 64/8=8
原式= 64*512+8 =……(自己算吧)
2. (1) =(-3 * 2 * 2/3 ) (a-b)^5 = -4( a-b)^5
3 . 用平方差公式,和完全平方公式
...
全部展开
1.X ^ 3m = (X ^ m)^ 3=4^3= 64
X^3n= (x^n)^3 =8^3=512
X^ (3m-n)= (X^3m) / (X^n )= 64/8=8
原式= 64*512+8 =……(自己算吧)
2. (1) =(-3 * 2 * 2/3 ) (a-b)^5 = -4( a-b)^5
3 . 用平方差公式,和完全平方公式
原式= ((3a^ 2)^2 -(1/2b)^2 )^2 = 81a^8- 9/2 a^4 b^2 + 1/16 b^2
4.=3(x-y)^5
5. 这个……你题目有问题
6.都等于0
收起