I’ll give brainliest if you explain how to do 1 2 and 3:) no links plz!

5/7 =55

5x/7 =55

7 ⋅ 5x/7 = 7 ⋅ 55

5x =  7⋅ 55

x= 77

1/5/6 = 6x/6

x= 1/30

x+ 2.17 = 5

x+ 2.17 = 5 - 2.17 = 5 - 2.17

x=2.83

Step-by-step explanation:

the line of

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb