Question

(5w + 2) (8w +5)

A: 40w^2 + 41w - 10
B: 40w^2 + 41w + 10
C: 40w^2 - 41w - 10
D: 40w^2 - 41w +10

Answer 1

are you familiar with the FOIL method ?

Answer 2

You unfoil the equation.
5w x 8w
5w x 5
8w x 2
2 x 5
Multiply all the terms, then simplify and add like terms

Answer 3

FOIL -- first, outside, inside, last

F -- multiply first terms in each set 5w * 8w = ?
O -- multiply outside terms in each set 5w * 5 = ?
I -- multiply inside terms in each set 2 * 8w = ?
L -- multiply last terms in each set 2 * 5 = ?

put it all together, then collect like terms and you will have your answer

Answer 4

so what 5w * 8w ??

Answer 5

Okay I understand, so the answer would be B right?

Answer 6

40w^2 + 25w + 16w + 10
collect like terms
40w^2 + 41w + 10

yes...answer is B

Answer 7

Thank you for your help

Answer 8

Okay I understand, so the answer would be B right?