Question

1,Thực hiện phép tính :

a, (x + 2)\(^9\) : (x + 2)\(^6\)

b, (x - y) \(^4\) : (x - 2)\(^3\)

c, ( x\(^2\) + 2x + 4)\(^5\) : (x\(^2\) + 2x + 4)

d, 2(x\(^2\) + 1)\(^3\) : \(\dfrac{1}{3}\) (x\(^2\) + 1)

e, 5 (x - y)\(^5\) : \(\dfrac{5}{6}\) (x - y)\(^2\)

2, Thực hiện phép tính :

a, 6xy\(^2\) : 3y

b, 6x\(^2\) y\(^3\) : 2xy\(^2\)

c, 8x\(^2\) y : 2xy

d, 5x\(^2\)y\(^5\) : xy\(^3\)

e, (-4x\(^4\) y\(^3\) ) : 2x\(^2\) y

f, xy\(^3\) z\(^4\) : (-2xz\(^3\))

g, \(\dfrac{3}{4}\) x\(^3\) y\(^3\) : ( -\(\dfrac{1}{2}\) x\(^2\)y\(^2\) )

h, 9x\(^2\)y\(^4\)z : 12xy\(^3\)

i, ( 2x\(^3\) y) (3xy\(^2\) ) : 2x\(^3\) y\(^3\)

3, Thực hiện phép tính :

a, (2x\(^3\) - x\(^2\) + 5x) : x

b, [3(x - y)\(^5\) - 2(x - y)\(^4\) + 3(x - y)\(^2\) ] : 5(x - y)\(^2\)

c, ( 9x\(^2\) y\(^3\) - 15x\(^4\)y\(^4\) ) : 3x\(^2\) y - ( 2 - 3x\(^2\) y)y\(^2\)

d, (6x\(^2\) - xy) : x + (2x\(^3\) y + 3xy\(^2\) ) : xy - (2x - 1)x

Answer 1

1,Thực hiện phép tính :

a, (x + 2)⁹ : (x + 2)⁶

=(x+2)^9-6

=(x+2)³

b, (x - y) ⁴ : (x - 2)³

=(x-y)^4-3

=x-y

c, ( x²+ 2x + 4)⁵ : (x² + 2x + 4)

=(x²+2x+4)^5-1

=(x²+2x+4)⁴

d, 2(x² + 1)³ : 1/3(x² + 1)

=(2÷1/3).[(x²+1)³÷(x²+1)]

=6(x²+1)²

e, 5 (x - y)⁵ : 5/6 (x - y)²

=(5÷5/6).[(x-y)⁵÷(x-y)²]

=6(x-y)⁾³