FOIL Method

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Multiply and simplify (if possible) $(2x +5y)(8x +7y)$

**Answer**

$\;\;\;(2x +5y)(8x +7y)$

$=(2x)(8x) + (2x)(7y) + (5y)(8x) + (5y)(7y)$

$= 16x^{2} +14xy +40xy +35y^{2} $

$= 16x^{2} +54xy +35y^{2} $