1. what are the roots of the equation? 5x^3+45x^2+70x=0 a. {−7, −2, 0} b. {−7, 0, 2} c. {0, 2, 7} d. {−2, 0, 7} 2. what number needs to be added to both sides of the equation in order to complete the square? x^2−18x=17 the file attached below is for question #2

1. factor the left side, divide all terms by 5x, solve all x's for 0

answer is A. {−7, −2, 0}

2. you would need to add (-9^2) to both sides.  -9^2 = 81, so add 81 to both sides

step-by-step explanation: s

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.