Question

factor?
5x^3-20x?

Answer 1

Take x commonly outside from each term.Try it.

Answer 2

Why not take 5x? That'd be much better.

Answer 3

5x(x^2-4)

Answer 4

Yea that will be better.

Answer 5

so how do i do this??

Answer 6

Do you know how to factor out something from an expression?

Answer 7

if I have -> 4-2
I can take out a factor of 2 to get 2(2-1) yes?
do the same with 5x^3-20x
take out 5x to get...

Answer 8

so take 5x out from 5x^3-20x
5x(5x^3/5x -20x/5x)

Answer 9

Well, do you get it or you need help?

Answer 10

i get it a lil bit!! so would the answer be 4

Answer 11

The answer must be 5x(x^2-4) . Actually what we are doing while factoring is we are multiplying and dividing the expression by a term which is present common in the terms in the equation.
So, 5x^3-20x = 5x*x^2 + 5x*4 .

Answer 12

Since 5x is common in both terms terms,it can be factored out.

Answer 13

The off course factor further to get 5x(x+2)(x-2) [diff of 2 squares]

Answer 14

so the answer is 5x(x^2-4)???

Answer 15

Yes it is.