If ac=20, ae=25, and ab=5 what is the length of ad?

Simply 8x squared + 5(7x squared- x) - 2x =

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.