y-2x-6 would be this expression factored
AC in this problem will equal 87. If the (units) is where you put the put units like feet, inches if there is units.
B=4676+10043 c=b-2160 answer equals b+c
I hope this is helpful I am trying not to say the exact answer but to teach you instead
The answer should be 2d-20.
Need an explanation?