Question

Rút gọn biểu thức

Answer 1

\(A=\left(19-6+20\right)x^2y=33x^2y\)

\(B=\left(11+6+1\right)xy^2=18xy^2\)

Answer 2

\(A=19x^2y-6x^2y+\dfrac{5}{4}x^216y\\ A=19x^2y-6x^2y+20x^2y\\ A=33x^2y\)

\(B=11xy^2+\dfrac{2}{3}x.9y^2+xy^2\\ B=11xy^2+6xy^2+xy^2\\ B=18xy^2\)