how do you factor 2c^2-7c=-5? I know that you have to change it to 2c^2-7c+5=0. Then you do this: (2c )(c ). But how do I find the two numbers? I can't think of one that works..

Question

how do you factor 2c^2-7c=-5? I know that you have to change it to 2c^2-7c+5=0. Then you do this: (2c    )(c    ). But how do I find the two numbers? I can't think of one that works..

PsyDAG · Answer

Since 5 is a prime number, it can only be factored into 1 and 5. To add to -7, they both need to be negative. Which factor needs to be multiplied by 2 to get the sum of -7 for the middle term?

I hope this helps. Thanks for asking.

Angie · Answer

I don't think there is any factor that can be multipl;ied by 2 to get -7..