A genius can do it ORALLY! Can you?

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A genius can do it ORALLY! Can you?
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18 май 2024

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Комментарии : 22

@atwarroyal8770 12 дней назад

term in square root can be written as 99^2 +(99+99) +1 aka (99+1)^2

@unknowncoder7332 13 дней назад

instantly solved while looking at the thumbnail.

@HarshChauhan-js7if 13 дней назад

took me 5 secs lookin at the thumbnail

@unknowncoder7332 13 дней назад

same

@thecalculatedcreativecoder1428 12 дней назад

Yep I saw the trick pretty easily

@PapaPyrite 12 дней назад

not me making it hard on myself by turning 99 into x and solving that way

@Warcraft_Traveler 12 дней назад

So 99² is 99*99, if you add 99, it's like have 99 1 more time, so it's like 99*100 and, similarly, if you add 100 to that, it's like 100*100. 100*100 is 100², square and square root cancel each other, answer : 100.

@FastandEasyMaths 12 дней назад

Perfect

@user-jz7vf5iq7h 13 дней назад

no. I can't do it orally. I can do it anally. does it count?

@prathyush4583 12 дней назад

lol

@shiva7159 14 дней назад

100

@Iveraxi 13 дней назад

±100

@unknowncoder7332 13 дней назад

nope, It is 100 only. WHY? because x = √100 = ±10 but directly √100 is just +10.

@SurrealDude 13 дней назад

@@unknowncoder7332 Are you mighty enough to prove his knowledge wrong? He wrote it because it's just the way it is. √10000 can be answered as 100. But a more deep answer would be ±100. Because (100)² = 10000 But (-100)² is also = 10000 (-100)² = (-100) * (-100) = (-)(-)(10000) = (+)(10000) = 10000

@parcton9716 12 дней назад

@@SurrealDude square root is defined as always positive. It's only when it's x squared it's both For x =sqrt(4) ----> x = 2 For x^2 = 4 ----> x = + or - 2 Google it if you don't believe me

@thecalculatedcreativecoder1428 12 дней назад

@@SurrealDude The correct answer is 100, not ±100. √x is a function and if you graph it the output can only be positive because then you would get to values for the same function. A function can't have two outputs for one input. That is a relation, not a function. x^2 = 100 has two solutions which are x = 10 & x = -10, but x = √100 only has the solution x = 10.

@unknowncoder7332 12 дней назад

@SurrealDude √(x)² = | x | Thus √(±100)² = | ±100 | = 100 The sign does not apply when there is no variable. When finding x² = 100², we are actually finding the value for "x" which can be ± depending on case. but here, there is no variable, thus the answer would be positive only.

@marcusgloder8755 11 дней назад

Hello everyone, here is my solution, without watching the bideo or reading other comments: √(99² + 99 + 100) = √(99 ‧ 99 + 99 + 100) = √(100 ‧ 99 + 100) = √(9900 + 100) = √(10000) = √(100 ‧ 100) = 100 Annotation The result of a positive orincipal sqare root is always non-negative. More precisely: it is an absolute number. Definition: √(x²) = |x| Therefore the result of the principal sqare root of 10000 is 100. Only 100, not 100 or -100. Best regards Marcus 😎

@marcusgloder8755 11 дней назад

Errata bideo = video orincipal = principal

@FastandEasyMaths 10 дней назад

Brilliant