somebody explain to me the square root equation pls

[vast mortar]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with:

+close

3. Feel free to nominate the person for helper of the week in #helper-nominations
4. Do not ping the mods, unless someone is breaking the rules.
5. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[fiery minnow]

define "the square root equation"

[heady widget]

an equation that contains a square root?

[fiery minnow]

ok, which one?

there's infinitely many

and 'the' means you have a specific one in mind

[heady widget]

like the basic ones

cause i can't understand it

[fiery minnow]

ask an actual question then...

[heady widget]

as example this one

√x + 2 = 5

[fiery minnow]

sqrt(x+2) or sqrt(x)+2?

but it's the same as solving any other equation like 7x+3=4, just that you have to square at some point or state there's no solution

such as with sqrt(x)=-1

[heady widget]

i just cant understand

how like

[fiery minnow]

well for one... what's the question?

[heady widget]

from 7x+3 it becomes 4

[fiery minnow]

your typing is ambiguous

cause... that's the equation I pulled from thin air as an example...

the equation is 7x+3=4

[heady widget]

oh wait

[fiery minnow]

the question is to solve it, ie find an x such that 7x+3=4

[heady widget]

so basically

its like

6x+3=3

or

no

[fiery minnow]

the math you're doing is the exact same

except you have to include steps of squaring both sides, or stating there isnt a solution

like if you get to sqrt(x)=-1, you conclude there's no solution

[heady widget]

oh

[fiery minnow]

since.. sqrt(x) >= 0 for all valid x.

[heady widget]

one second

what about one of these

how do i solve those

[fiery minnow]

just use properties of the sqrt to simplify

$\sqrt{ab}=\sqrt{a}\sqrt{b}$ for $a,b\geq 0$

[fierce bridge]

Omegabet_

[fiery minnow]

so it's clear, for example, that $\sqrt{50}=\sqrt{2\cdot 25}=\sqrt{2}\sqrt{25}=5\sqrt{2}$

[fierce bridge]

Omegabet_

[heady widget]

im pretty confused

[fiery minnow]

ok, and stating that doesnt help

if you're confused, you ask a question

[heady widget]

but one second

[heady widget]

this example is for the first ones

or the ones under

[fiery minnow]

well you never specified a question, so I just picked a random radical from the page

[heady widget]

oh

[fiery minnow]

yeah

[heady widget]

also

when its like this

is it 3x2?

[fiery minnow]

it's 3 times sqrt(2)

+close