Question

|x+1|≤|x-3|

Answer 1

try to square both sides

Answer 2

remember that \(|x|^2=x^2\)

Answer 3

uh?

Answer 4

I mean if you square both sides you have
\[\Large
(x+1)^2\leq(x-3)^2
\]

Answer 5

expand, simplify and continue from there

Answer 6

why will it be squared?

Answer 7

so we can get rid off the absolute value sign

Answer 8

uh? we wont multiply it by -?

Answer 9

sorry, I mean to get rid of the absolute value symbol

Answer 10

i see. okay2..