Question

(5d - 6)(- 4d + 9)


A. - 20d²+ 69d + 54
B. - 20d²+ 69d - 54
C. - 20d²- 54
D. - 20d²+ 21d - 54

Answer 1

are you familiar with the FOIL method ?

Answer 2

I am not @texaschic101

Answer 3

well...let me teach you :)

FOIL stands for First, Outside, Inside, Last
(5d - 6)(- 4d + 9)

First -- multiply first terms in each set.....5d * -4d = -20d
Outside -- multiply outside terms in each set... 5d * 9 = 45d
Inside -- multiply inside terms in each set...-6 * -4d = 24d
Last -- multiply last terms in each set.. -6 * 9 = -54

now put it all together..
-20d + 45d + 24d - 54 -- combine like terms
-20d + 69d - 54

any questions ?

Answer 4

Thank you so much! This'll make it much more easier! @texaschic101

Answer 5

glad to help :)