This looks like: 
To solve this problem, you'll want to use the AC method to factor x^2+7x-30.
After factoring your expression will look like this:

Cancel out the x+10 because they are common factors, so you are just left with the simple x-3.
Answer is:
x - 3
Answer: the value of x is 45
Step-by-step explanation: its a little bit bigger than the 40 on the right
1,54 3,8 6,9
multiply the pairs of numbers