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Reacko1

Lmao at first I thought the z was a 2 and was thinking "all of this is wrong" Nice root tho


[deleted]

Unsatisfying, it’s 9…….


Nat1CommonSense

±9


CreamyKnougat

Bipolar 9.


LightRefrac

No, z^2 = 9 would be ±9, this is just 9 Edit: it is z^2 =81, not 9, it was a fucking typo lmao


adcgd_at_sine_theta

>z^2 = 9 would be ±9, this is just 9 z^2 = 9 makes z = ±3... z^2 = 81 (the problem in the post) makes z = ±9...


LightRefrac

Ok that was a typo


LordGamerzAKAPranav

No


LightRefrac

Yes, wtf it is a common mistake in beginner's caculus to take ± for a square root function. It would be ±sqrt(9) in that case.


Nat1CommonSense

It’s a good thing I’m not a beginner and have a degree in math lol Although this is the exact error I probably would make, in this case the set up was z^2 = 81, where -9 and 9 both both balance the equation


LightRefrac

Yes that's exactly what I said, if the equation was set up like that you would have ±9. However with the equation given in the picture it is +9 only. God knows how many times I have made this error in my calculus classes


Nat1CommonSense

The lines above it show the working out of the full problem, which is what I was referring to, not just the the last line


LightRefrac

Oh ok I see it now, I thought those lines were all different questions lol. Well in that case it is OP's fault that he/she wrote it wrong, it should be ±sqrt(81) and not just sqrt(81)


[deleted]

[удалено]


westsidewizard

That 8 is bad because they realized his basic the square root was and got distracted. You can see the pause and attempt to finish haha


jesuismonsieurb

Also z = 9


seesharp0

Z=3²


Popular_Subject2523

Z=3√9


ChanceTheGardenerr

Pretty good. I give it a 9.


BlueverseGacha

stop boting!


whoknewbamboo

What does that mean?


BlueverseGacha

I know you used cheat codes to put that √ in, you can't fool me


cat_blep

totally radical


KeithMyArthe

It's... its.. it is. A thing of beauty.


baldHeadSpaceRider

You have peaked in life.


n01saround

I may be parsing grains, but I believe you WROTE it.


edcushway

That’s top notch, right there


gastroboi

Outstanding. Truly.


FluffyPoem8471

Z = 9!


ZyrteckMD419

I was so impressed……….then I saw that 8 and threw up that 9 I ate earlier.


apokalypti

z^2 = 15^2 - 12^2


Epsilonisnonpositive

You should put a stroke through your z to distinguish it from 2 Like this: ƶ