Question

Factor 3x^2 - 15x - 42.
3(x + 2)(x - 7)
3(x - 2)(x + 7)
3(x - 7)(x + 2)

Answer 1

\[\Large \color{purple}{\rightarrow 3(x^2 - 5x - 14) }\]
Factor x^2 - 5x - 14
\[\Large \color{purple}{\rightarrow x^2 + 7x - 2x - 14 }\]
\[\Large \color{purple}{\rightarrow x(x + 7) -2(x + 7) }\]
\[\Large \color{purple}{\rightarrow (x - 2)(x + 7) }\]

Answer would be ?

Answer 2

second one

Answer 3

Yes.

Answer 4

3x^2 - 15x - 42
= 3(x^2 - 5x -14)
= 3(x-7)(x+2)

Answer 5

so callisto u r saying the bottom one

Answer 6

Oh yes, I'm wrong