Expand
d^{2}+14d+13
Evaluate
\left(d+1\right)\left(d+13\right)
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d^{2}+13d+d+13
Apply the distributive property by multiplying each term of d+1 by each term of d+13.
d^{2}+14d+13
Combine 13d and d to get 14d.
d^{2}+13d+d+13
Apply the distributive property by multiplying each term of d+1 by each term of d+13.
d^{2}+14d+13
Combine 13d and d to get 14d.
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