1)\(x \times y \times x \times 4\)
\(4x^2y\)
2)\(4y \times x \times y \times x \times 3x\)
\(12x^3y^2\)
3)\(3x^3 \times 2y - x^2 \times 6y \times x\)
\(0\)
4)\(x \times6y^2 \times z \times \frac{1}{3}x \times z\)
\(2x^2y^2z^2\)
5)\(5xy \times 4xy \times \frac{1}{2}z\)
\(10x^2y^2z\)
6)\(3x^2y-\frac{3}{4}x \times y \times x - \frac{1}{2}yx^2\)
\(1\frac{3}{4}(x^2y)\)
\(\)7)\(12xy \times \frac{1}{3}xy - \frac{1}{3}yx -2xy +y\)
\(1\frac{2}{3}(xy)+y\)
\(\)8)\(32 \times \frac{1}{4}x^2y- 32 \times \frac{1}{8}yx^2- 32 \times \frac{3}{16}x^2y\)
\(-2x^2y\)