a, = 3x2y3 : x2y2 - 5x2y2 : x2y2 +6x4y7 :x2y2 -9x5y4 :x2y2
= 3y -5+ x2y5 -9x3y2
b., = a2.(6a-3):a2 + 3a(4a+3):3a = 6a - 3+ 4a +3= 10a
a, = 3x2y3 : x2y2 - 5x2y2 : x2y2 +6x4y7 :x2y2 -9x5y4 :x2y2
= 3y -5+ x2y5 -9x3y2
b., = a2.(6a-3):a2 + 3a(4a+3):3a = 6a - 3+ 4a +3= 10a
Làm phép chia
a. \(\left(20x^4y-25x^2y^2-3x^2y\right):5x^2y\)
b. \(\left(15xy^2+17xy^3+18y^2\right):6y^2\)
c. \(\left[3\left(x-y\right)^4+2\left(x-y\right)^3-5\left(x-y\right)^2\right]:\left(y-x\right)^2\)
d. \(\left(x^2-2xy+y^2\right):\left(y-x\right)\)
Làm tính chia :
a) \(\left(5x^4-3x^3+x^2\right):3x^2\)
b) \(\left(5xy^2+9xy-x^2y^2\right):\left(-xy\right)\)
c) \(\left(x^3y^3-\dfrac{1}{2}x^2y^3-x^3y^2\right):\dfrac{1}{3}x^2y^2\)
Làm tính chia:
a) \(5x^2y^4:10x^2y\)
b)\(\dfrac{3}{4}x^3y^3:\left(-\dfrac{1}{2}x^2y^2\right)\)
c)\(\left(-xy\right)^{10}:\left(-xy\right)^5\)
a)\(\left(\dfrac{5}{7}x^2y\right)^3:\left(\dfrac{1}{7}xy\right)^3\)
b) \(\left[5\left(a-b\right)^3+2\left(a-b\right)^2\right]:\left(b-a\right)^2\)
c) \(5\left(x-2y\right)^3:\left(5x-10y\right)\)
d) \(\left(x^3+8y^3\right):\left(x+2y\right)\)
Thực hiện phép tính
\(\left(15x^4y^6-12x^3y^4-18x^2y^3\right):\left(-6x^2y^2\right)\)
Làm tính chia :
a) \(\left(-2x^5+3x^2-4x^3\right):2x^2\)
b) \(\left(x^3-2x^2y+3xy^2\right):\left(-\dfrac{1}{2}x\right)\)
c) \(\left(3x^2y^2+6x^2y^3-12xy\right):3xy\)
Thực hiện phép tính rồi tìm GTNN của biểu thức:
\(A=\left(9xy^2-6x^2y\right):\left(-3xy\right)+\left(6x^2y+2x^4\right):\left(2x^2\right)\)
Làm tính chia :
a) \(\left[5\left(a-b\right)^3+2\left(a-b\right)^2\right]:\left(b-a\right)^2\)
b) \(5\left(x-2y\right)^3:\left(5x-10y\right)\)
c) \(\left(x^3+8y^3\right):\left(x+2y\right)\)
Tìm số tự nhiên n để mỗi phép chia sau là phép chia hết:
a) \(\left(5x^3-7x^2+x\right):3x^n\)
b) \(\left(13x^4y^3-5x^3y^3+6x^2y^2\right):5x^ny^n\)