root equations

[hazy quest]

sqrt(a) => 0

For example

In 73.

as i said sqrt(a) => 0

X-1 => 0
X => 1
X + 2 => 0
X => -2
4x -3 => 0
x => 0.75

we will choose what fits all the equations

Its x => 1

@thorny crystal

[thorny crystal]

I’m sorry I still don’t quite understand it, do you pick the largest number?

[hazy quest]

For example X cant be [0.75;+inf)

Sqrt(0.75-1)

x with a negative sign and this is impossible

[thorny crystal]

in which exercise do you mean? nr. 73?

[hazy quest]

Yep

[hazy quest]

.

[hazy quest]

So yes

[thorny crystal]

okay i think i got it

i’ll try a few exercises to check, if i still have trouble i’ll come back here

but thanks a lot!😄