Evaluate
\left(y+4z\right)\left(7y+z\right)
Expand
7y^{2}+29yz+4z^{2}
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7y^{2}+28yz+zy+4z^{2}
Apply the distributive property by multiplying each term of 7y+z by each term of y+4z.
7y^{2}+29yz+4z^{2}
Combine 28yz and zy to get 29yz.
7y^{2}+28yz+zy+4z^{2}
Apply the distributive property by multiplying each term of 7y+z by each term of y+4z.
7y^{2}+29yz+4z^{2}
Combine 28yz and zy to get 29yz.
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