Question

X2+ 5x -24=(x – 3) (x + m)

Answer 1

m = 8

Explanation:

1. put -24 into the equation so :
   `x^(2) +5x -24`
2. find two numbers that : times to make -24, and add to make 5
3. those two numbers are 8 and -3 (since 8-3=5 and 8*-3=-24)
4. put those into double brackets: (x-3)(x+8)
5. (x-3)(x+8) = (x-3)(x+m)
6. +8 goes into where m is
7. m = 8