Rearrange to: x^2 + 18x - 25 = 0
Then factorise (I like to do it by completing the square):
(x + 9)^2 -81 -25 = 0
(x + 9)^2 = 106
x + 9 = sqrt(106)
The sol'ns are:
x = -9 + and - sqrt(106)
Answer:
5 hours.
Step-by-step explanation:
let they meet after t hours.
310t+380t=3450
690t=3450
69t=345
t=345/69=5
2x^2=4x
I'm pretty sure this is it because there are only 2 like terms so you can't combine anything with 4x.
Answer:
x<1, C
Step-by-step explanation:
ily ! have a good day, i hope i'm right lol
