Y=-5x-7. I'm almost certain but you never know
Answer:
Manu should considered only the possible rational zeros between -6 and 1, because those are the lower and upper bonds. A lower bond means that possible rational zero is not less than -6, and the higher number possible is not more than 1. This way, Manu has a interval to try. This rational method with bonds is aimed to narrow all possible solutions.
So, if Manu find out through the synthetic division that possible roots are +1/4,+1/2,+1,+5/4,+2,+5/2,+4,+5,+10,+20, then he only should considered those inside the intervals marked by the lower and upper bonds, which are +1/4,+1/2,+1, because the rest is higher than 1.
<em>Therefore, Manu should try first +1/4,+1/2 and +1.</em>
5x-22=-7
Move -22 to the other side
Sign changes from-22 to +22
5x-22+22=-7+22
5x=-7+22
5x= 15
Divide both sides by 5 to get x by itself
5x/5= 15/5
x= 3
answer:
x= 3