Question

factorise : x^2 - 2x -35?

Answer 1

x^2 - 2x - 35


x^2 - 7x+5x - 35


(x^2 - 7x)+(5x - 35)


x(x-7)+5(x-7)


(x+5)(x-7)


So x^2 - 2x - 35 completely factors to (x+5)(x-7)

Answer 2

Note: -7 and 5 add up to -2 and multiply to -35

Answer 3

\[(x-7) (x+5) \]

Answer 4

>Note: -7 and 5 add up to -2 and multiply to -35

This is how I'd factor it.

I know my answer will look like ( x +/- something) times ( x +/- something else)

And since -7 and +5 fit the bill... the factorization is just (x -7) times (x+5) .
Always remember to "foil" out your answer to make sure your solution is correct. :)