Multiply by using the distributive property. $2 a ( 4 a + 5 )$
A) $8 a + 10$
B) $8 a ^ { 2 } + 5 a$
C) $2 a ^ { 2 } + 10 a$
D) $8 a ^ { 2 } + 10$
E) $8 a ^ { 2 } + 10 a$

Question

Quizplus · Accepted Answer

Use the distributive property by multiplying 2a by both terms inside the parentheses. This gives us:
2a(4a + 5) = (2a)(4a) + (2a)(5) = 8a^2 + 10a. Choice E matches this result.

Multiply by Using the Distributive Property 2a(4a+5)2 a ( 4 a + 5 )2a(4a+5)

Multiply by Using the Distributive Property $2 a ( 4 a + 5 )$