How to rationalise the denominator with surds.wmv
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Uploader Comments (maths520)
Top Comments
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Maths exam in couple days now im confident.
9 months ago 19
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Is it just me or does this guy learn you more than your actual teacher?
3 months ago 16
All Comments (48)
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thanks!this was so helpful,learned so much more in this small video than i ever have in class!
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Thanks dude
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SWAG
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it was good, but some harder questions would have been cool
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thing is, this guy has the way to teach everyone in the class, but one of you in the class at the same time due to youtube. its as if he's sitting with you explaining it without having to worry about the class, its awesome!
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@JPEdits i learn more from my revision guide than my teachers so... revision guides are the key to success
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You explained that very well and precisely! Thank you.
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great video :)
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@JPEdits i think you mean this guy "teaches you more"
1 month ago 5
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Great videos man! For for question at 3:47 can't you also rationalize by multiplying by 4√3 giving 28√3 / 48? Because for denominators where there are more than one term eg. (6√3 - 4√5) as the denominator it is multiplied by (6√3 + 4√5). Note I simply left out the numerator because it isn't really relevant to the question.
MrChin000 3 months ago
@MrChin000 Yes you could, but you would have to cancel the 4s out afterwards. Try to multiply by the smallest quantitty possible as this avoids unnecessary cancelling later.
maths520 2 months ago