Thực hiện phép tính:
a) \(2xy.3{{x}^{2}}{{y}^{3}}\)
b) \(x.\left( {{x}^{2}}2x+5 \right)\)
c) \(\left( 3{{x}^{2}}-6x \right):3x\)
d) \(\left( {{x}^{2}}2x+1 \right):\left( x1 \right)\)
A.\(a, 6{x^3}{y^4}\)
\(b,{x^3}-2{x^2} + 5x\)
\(c, x - 2\)
\(d, x - 1\)
B.\(a, 6{x^3}{y^4}\)
\(b,{x^3}-2{x^2} + 5x\)
\(c, x - 2\)
\(d, x + 1\)
C.\(a, 6{x^3}{y^4}\)
\(b,{x^3}+2{x^2} + 5x\)
\(c, x +2\)
\(d, x - 1\)
D.\(a, 6{x^3}{y^4}\)
\(b,{x^3}-2{x^3} + 5x\)
\(c, x - 2\)
\(d, x + 1\)