FOIL Method

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Multiply and simplify (if possible) $(7k +2l)(9k +5l)$

**Answer**

$\;\;\;(7k +2l)(9k +5l)$

$=(7k)(9k) + (7k)(5l) + (2l)(9k) + (2l)(5l)$

$= 63k^{2} +35kl +18kl +10l^{2} $

$= 63k^{2} +53kl +10l^{2} $