Question

This trinomial can't be factored because it is prime right?

x^2 + 5x - 66

Answer 1

No it can be factored..

Answer 2

11 and -6

Answer 3

x^2 + 5x - 66
x^2 11x - 6x - 66 solve further

Answer 4

oh so you subtract -6 from 11

Answer 5

do u know the process of factorisation???

Answer 6

here the x^2 term has coefficient 1, so we look at the last constant which is -66
we then try to find two factors of -66 such that their product is -66 but sum is 11 (i.e. coefficient of x term)
now -66 can have various factor combinations
-1 x 66 or 1 x -66
-2 x 33 or 2 x -33
-3 x 22 or 3 x -22 etc.
one of these combinations is 11 x -6
we choose this because 11 x -6 = -66
and 11 + (-6) = 5 which is the coefficient of the x term