问8道数学题
10^7÷(10^3÷10^2)(x-y)^3.(x-y)^2.(x-y)4×2^n×2^n-1(-x)^3.x^2n-1+x^2n.(-x)^2(y^2.y^3)÷(y...
10^7÷(10^3÷10^2)
(x-y)^3.(x-y)^2.(x-y)
4×2^n×2^n-1
(-x)^3.x^2n-1+x^2n.(-x)^2
(y^2.y^3)÷(y.y^4)
x^2.x^3+x^7÷x^2
m^5÷m^2×m
a^4+(a^2)^4-(a^2)^2 展开
(x-y)^3.(x-y)^2.(x-y)
4×2^n×2^n-1
(-x)^3.x^2n-1+x^2n.(-x)^2
(y^2.y^3)÷(y.y^4)
x^2.x^3+x^7÷x^2
m^5÷m^2×m
a^4+(a^2)^4-(a^2)^2 展开
4个回答
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10^7÷(10^3÷10^2)
=10^7÷10^(3-2)
=10^7÷10
=10^(7-1)=10^6
(x-y)^3.(x-y)^2.(x-y)
=(x-y)^(3+2+1)
=(x-y)^6
4×2^n×2^n-1
=2^2*2^n*2^n-1
=2^(2+n+n)-1
=2^(2n+2)-1
(-x)^3.x^2n-1+x^2n.(-x)^2
=-x^3*x^(2n-1)+x^2n*x^2
=-x^(2n-1+3)+x^(2n+2)
=-x^(2n+2)+x^(2n+2)
=0
(y^2.y^3)÷(y.y^4)
=y^(2+3)÷y^(1+4)
=y^5÷y^5
=1
x^2.x^3+x^7÷x^2
=x^(2+3)+x^(7-2)
=x^5+x^5
=2x^5
m^5÷m^2×m
=m^(5-2+1)
=m^4.
a^4+(a^2)^4-(a^2)^2
=a^4+a^8-a^4
=a^8.
=10^7÷10^(3-2)
=10^7÷10
=10^(7-1)=10^6
(x-y)^3.(x-y)^2.(x-y)
=(x-y)^(3+2+1)
=(x-y)^6
4×2^n×2^n-1
=2^2*2^n*2^n-1
=2^(2+n+n)-1
=2^(2n+2)-1
(-x)^3.x^2n-1+x^2n.(-x)^2
=-x^3*x^(2n-1)+x^2n*x^2
=-x^(2n-1+3)+x^(2n+2)
=-x^(2n+2)+x^(2n+2)
=0
(y^2.y^3)÷(y.y^4)
=y^(2+3)÷y^(1+4)
=y^5÷y^5
=1
x^2.x^3+x^7÷x^2
=x^(2+3)+x^(7-2)
=x^5+x^5
=2x^5
m^5÷m^2×m
=m^(5-2+1)
=m^4.
a^4+(a^2)^4-(a^2)^2
=a^4+a^8-a^4
=a^8.
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10^7÷(10^3÷10^2) =10^6
(x-y)^3.(x-y)^2.(x-y) =.(x-y)^6
4×2^n×2^n-1 =2^(1+2n)
(-x)^3.x^2n-1+x^2n.(-x)^2 =-x^(4n+4)
(y^2.y^3)÷(y.y^4) =1
x^2.x^3+x^7÷x^2 =2x^5
m^5÷m^2×m =m^4
a^4+(a^2)^4-(a^2)^2 =1
(x-y)^3.(x-y)^2.(x-y) =.(x-y)^6
4×2^n×2^n-1 =2^(1+2n)
(-x)^3.x^2n-1+x^2n.(-x)^2 =-x^(4n+4)
(y^2.y^3)÷(y.y^4) =1
x^2.x^3+x^7÷x^2 =2x^5
m^5÷m^2×m =m^4
a^4+(a^2)^4-(a^2)^2 =1
追问
(X+a)×(x-a)等于
(3x+7y)(3x-7y)等于
(3x+9)(6x+8)
(1/2x^2y-2xy+y^).3xy
(1/3a^2b^3).(-15a^2b^2)
(4a^3b-6a^2b^2+12ab^3)÷(2ab)
(a^2bc)^2÷(ab^2c)
(3mn+1)(3mn-1)-8m^2n^2
{(3a+b)^2-b^2}÷a
(x+2)^2-(x+1)(x-1)
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10^7÷(10^3÷10^2)=100
(x-y)^3.(x-y)^2.(x-y)=(x-y)^6
4×2^n×2^n-1=2^(2n+1)
(-x)^3.x^2n-1+x^2n.(-x)^2=0
(y^2.y^3)÷(y.y^4)=1
x^2.x^3+x^7÷x^2=2*x^5
m^5÷m^2×m=m^4
a^4+(a^2)^4-(a^2)^2=a^8
(x-y)^3.(x-y)^2.(x-y)=(x-y)^6
4×2^n×2^n-1=2^(2n+1)
(-x)^3.x^2n-1+x^2n.(-x)^2=0
(y^2.y^3)÷(y.y^4)=1
x^2.x^3+x^7÷x^2=2*x^5
m^5÷m^2×m=m^4
a^4+(a^2)^4-(a^2)^2=a^8
追问
(X+a)×(x-a)等于
(3x+7y)(3x-7y)等于
(3x+9)(6x+8)
(1/2x^2y-2xy+y^).3xy
(1/3a^2b^3).(-15a^2b^2)
(4a^3b-6a^2b^2+12ab^3)÷(2ab)
(a^2bc)^2÷(ab^2c)
(3mn+1)(3mn-1)-8m^2n^2
{(3a+b)^2-b^2}÷a
(x+2)^2-(x+1)(x-1)
追答
楼主。。。。您整我那?。。。这种底数相同的数的四则运算 x^m*x^n=x^(m+n) x^m除以x^n=x^(m-n) 按照这个法则计算就行了 还有就是(x+y)(a+b)=xa+xb+ay+yb
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5896 2589 3.256 63.2569 12596.][=5 125.908666
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