Question

Factor 2x^2 - 8

Answer 1

How about starting with factoring out the \(2\) and then continuing by the difference of squares thingy?

Answer 2

factoring out 2? distributing it?

Answer 3

I mean - factoring the expression in such a way that 2 is outside the parentheses.

Answer 4

Sorry not sure I follow.

Answer 5

2(x-2)(x+2)

Answer 6

For example, in the expression \(2x - 6\), you can factor out the 2 and get \(2(x - 3)\).

Answer 7

Do you find it much better by the example?

Answer 8

Still a bit confused... :l

Answer 9

\[2(x^2-4)=2(x^2-2^2)=2(x+2)(x-2)\]

Answer 10

Do you know how to divide \(2\) and \(2x^2 - 8\)?

Answer 11

Just use wolfram alpha.
HERE: http://www.wolframalpha.com/input/?i=2x%5E2+-+8
You just type the polynomial and it will factor it for you!

Answer 12

@sami-21 Should you the whole solution.

Answer 13

Showed*