How do you simplify #(5a + 7) ( 4a + 2)#?

1 Answer
David Drayer · JS
Jun 23, 2017

#20a^2 + 38 a + 14 #

Explanation:

Use the distributive property to break this down into a trinomial

# (5a + 7) ( 4a + 2) = 5a(4a +2) + 7 (4a +2) #

# 5a( 4a + 2) + 7 ( 4a + 2) = 20a^2 + 10a + 28 a + 14#

# 20a^2+ 10a + 28 a + 14 = 20a^2 + 38 a + 14 #

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