+1124 Hi friends,
I understand if I really seem very daft for asking this question, but I'm going to ask anyway...if we have this:
x26−3x2−x3+3
we get the LCD, which is 6
so we have:
x2−9x−2x+186
finally we have:
x2−11x+186
WHY CAN'T WE JUST DO THIS:
we have:
x26−3x2−x3+3
just multiply with 6 straight through, and get:
x2−11x+18
NO LCD...
Sorry if this is really a stupid question..
+118703 Hi Juriemagic,
You can multiply by 6/6 but multiplying just by six makes it 6 times bigger
What you can do is this
66∗[x26−3x2−x3+3]=16∗{61∗[x26−3x2−x3+3]}=16(x2−9x−2x+18)
+1124 Hi Melody,
okay, but then that answer you got is just a different format to indicate your are still deviding by 6, so it really is exactly the same thing as having an LCD, not so?...So, when can I just multiply straight through using the highest denominator, to end up not having an LCD or a fraction in front of an expression?
