Câu 1

6x8:2x2=6x^{8}:2x^{2}=

3x43 x^{4}.
3x63 x^{6}.
3x103 x^{10}.
Câu 2

6x12:(3x3)=6x^{12}: \left( -3x^{3} \right)=

2x9-2 x^{9}.
2x42 x^{4}.
2x92 x^{9}.
2x4-2 x^{4}.
Câu 3

(24x12):(6x3)=(-24x^{12}): \left( -6x^{3} \right)=

4x4-4 x^{4}.
4x9-4 x^{9}.
4x44 x^{4}.
4x94 x^{9}.
Câu 4

4x2:4x2=4x^{2}:4x^{2}=

11.
00.
x2x^{2}.
xx.
Câu 5

4x3:4x3=-4x^{3}:4x^{3}=

x-x.
x3-x^{3}.
00.
1-1.
Câu 6

(18x312x2+9x):(3x)=(18x^3-12x^2+9x):(-3x)=

6x24x+36x^2- 4x + 3.
6x3+4x23x-6x^3+ 4x^2 - 3x.
6x2+4x3-6x^2+ 4x - 3.
6x34x2+3x6x^3- 4x^2 + 3x.
Câu 7

(4x36x2+5x):(2x)=(4x^3-6x^2+5x):(-2x)=

2x33x2+3x2x^3- 3x^2 + 3x.
2x2+3x52-2x^2+ 3x - \dfrac{5}{2}.
2x3+3x252x-2x^3+ 3x^2 - \dfrac{5}{2}x.
2x23x+32x^2- 3x + 3.