Question

Can someone help me solving this?
2x^2+8x-42/x^2+12x+35

Answer 1

I have no idea what to do.

Answer 2

You'll want to factor both num'r and den'r first.

Answer 3

I'm assuming that your instructions are to "simplify the expression" or something along those lines. Once you factor everything, you'll see if there are common factors that can be cancelled.

Answer 4

The num'r has greatest common factor of 2, so factor that out first. Then both numerator and denominator will factor pretty easily.

Answer 5

Thank you. would it be 2(x-3)/(x+5) with ristrictions x≠7,x≠5

Answer 6

Double check your signs on those domain restrictions...?

Answer 7

but other than that, looks right to me. Just fix those signs! :) Good job! It's important to remember (as you did) that even though a factor cancels when you reduce the expression to lowest form, you still have to make sure that the domain does not include any values that make that den'r=0. :)