Kanooooa: Whats x^2-12x+32
Hi Kanoooa,
Let's see what we can do.
x
2-12x+32 [I used the 'sup' button above the smilies to get the superscript 2]
I am assuming that you need to factorise this.
You need to look for 2 numbers that multiply to 32 and add to -12.
It is easiest to think of the multiply part first.
you are multiplying to get a positive number therefore both numbers must be + or both numbers must be -
since they add to a negative number, both numbers must be negative.
now think of the factors of 32
-16 and -2 NO
-8 and -4 Bingo,
-8*-4=32 and -8+-4=-12
So the answer is
x
2-12x+32 = (x-8)(x-4)
+118723 
