Evaluate
\left(x+y\right)\left(10x+y\right)
Expand
10x^{2}+11xy+y^{2}
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10x^{2}+10xy+yx+y^{2}
Apply the distributive property by multiplying each term of 10x+y by each term of x+y.
10x^{2}+11xy+y^{2}
Combine 10xy and yx to get 11xy.
10x^{2}+10xy+yx+y^{2}
Apply the distributive property by multiplying each term of 10x+y by each term of x+y.
10x^{2}+11xy+y^{2}
Combine 10xy and yx to get 11xy.
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