- #1
PhysicsHelp12
- 58
- 0
Cross multiply ...
and then multiply by the common denominator...
how do you do it
do you do it in your head..by cross multiplying
or the other way
It seems like cross multiplying is less formal ...and I don't know if its 'right' to take the shortcut --since you have to do this so much
If you have more than two like with a partial fractions problem ...im obviously going to just mult/divide by the common denominator
But how do you do it in general ...
and then multiply by the common denominator...
how do you do it
do you do it in your head..by cross multiplying
or the other way
It seems like cross multiplying is less formal ...and I don't know if its 'right' to take the shortcut --since you have to do this so much
If you have more than two like with a partial fractions problem ...im obviously going to just mult/divide by the common denominator
But how do you do it in general ...