1.

Find the product of \[\left\{ 3{{x}^{2}}yz\times \frac{4}{5}(x+y)z \right\}\times \left\{ -\frac{3}{17}{{x}^{3}}y{{z}^{4}}(x+y+3z) \right\}\]

A. \[\frac{-36}{85}{{x}^{5}}{{y}^{2}}{{z}^{6}}\left[ {{x}^{2}}+\text{ }2xy\text{ }+\text{ }{{y}^{2}}\,\,+\text{ }3xz\text{ }+\text{ }3yz \right]\]
B. \[\frac{36}{85}{{x}^{5}}y{{z}^{5}}\left[ {{x}^{2}}+\text{ 3}xy\text{ }+\text{ }{{y}^{3}}\,\,+\text{ }3xz\text{ }+\text{ }3yz \right]\]
C. \[\frac{36}{85}{{x}^{5}}{{y}^{2}}{{z}^{5}}\left[ {{x}^{2}}+\text{ 2}xy\text{ }+\text{ }{{y}^{2}}\,\,+\text{ 2}xz\text{ }+\text{ }3yz \right]\]
D. \[\frac{-36}{85}{{x}^{5}}y{{z}^{6}}\left[ {{x}^{2}}+\text{ 2}x{{y}^{2}}\text{ }+\text{ }y\,\,+\text{ 3}xz\text{ }+\text{ }3yz \right]\]
E. None of these
Answer» B. \[\frac{36}{85}{{x}^{5}}y{{z}^{5}}\left[ {{x}^{2}}+\text{ 3}xy\text{ }+\text{ }{{y}^{3}}\,\,+\text{ }3xz\text{ }+\text{ }3yz \right]\]


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