Question

a^2+6ax-40x^2
factor out

Answer 1

A=a^2
B=6ax
C=-40x^2
what are two factors of A*C that add up to be B
A*C=-40a^2x^2=(10ax)(-4ax)
B=10ax-4ax
so
a^2+10ax-4ax-40x^2 now factor by grouping

Answer 2

what do you mean by grouping

Answer 3

(a^2+10ax)+(-4ax-40x^2)

Answer 4

what do the terms in the first group have in common?
what do the terms in the second group have in common?

Answer 5

nothing...??

Answer 6

?

Answer 7

so there isn't an a in common in the first group?
there isn't a -4x in common in the second group?

Answer 8

theres not 2 -4x's so there isnt any -4x in common and theres a^2 and a but those are different they arent the same

Answer 9

both terms in the first group DO have the factor a in common
both terms in the second group DO have the factor -4x in common
so we have
a(a+10x)-4x(a+10x)

Answer 10

so thats the final answer??

Answer 11

we haven't factored it yet
factor means numbers being multiplied those two terms are being subtracted (or you could say added)
so what does the first term have in common with the second term now?

Answer 12

10x and a???

Answer 13

you mean 10x+a or a+10x right?

Answer 14

suree

Answer 15

ok so factored that out and tell me what you get?

Answer 16

a^2+10x^2??

Answer 17

no try again
think can you factor this: 3ax+9x
they both have in 3x in common so we can factor 3x out 3x(a+3)

Answer 18

i dotn know how to do any of these i dont know what any of this means i have a 26% in my algebra class and i have about 17 more problems to do and none of this is making sense

Answer 19

ok are problem above we are trying to factor a(a+10x)-4x(a+10x)
both terms have a+10x in common so factor it out
(a+10x)(a-4x)
a was lefted from the first term
-4x was lefted from the second term

Answer 20

?????

Answer 21

?????

Answer 22

lol

Answer 23

i have no clue what your talking about iwioth all this stuff matching up and how things are left out and what not

Answer 24

i have no clue what your talking about iwioth all this stuff matching up and how things are left out and what not

Answer 25

it sounds like you need an in-person tutor
this is as well as i can explain it online and probably in person
maybe you should review some easier forms of factoring first

Answer 26

lol i actually try to explain it to you and others are just giving you answers and you give them medals lol