I do O/Levels in 2025 and I have a Mathematics Mock Exam tomorrow and without referring my text books, I refer these videos. Your videos helped me so much. Keep up the good work!
People you wicked this a really nice way to learn/solve your indices problem and only 360 liked the vid while 24.6k of you people viewed what is think at least learn to be kind
6:36 i don't understand the factorising part like why can't you just do 5 to the power of 59 - 5 to the power of 57 which is just 5 to the power of 2? and how do you factorise it like i don't understand why it's(5 squared - 1)
That is because 5 to the power 59 subtract 5 to the power 57 is not equal to 5 to the power 2. This would be if they were divided. Try yourself. Is 2^5 - 2^3 = 2^2 ?
This is the wrong video but for the question you refer to you add the 1/3 and 1/3 to get 2/3. Then the coeffcients multiplied are just 4 x 1 = 4. So that answer is 4x^(2/3)
This course does not cover complex numbers so we are working with real numbers only. As such, you cannot square root a negative number. The square root of -5 is not 5i, it is actually root5 i.
I do O/Levels in 2025 and I have a Mathematics Mock Exam tomorrow and without referring my text books, I refer these videos. Your videos helped me so much. Keep up the good work!
How is it?did you pass?
People you wicked this a really nice way to learn/solve your indices problem and only 360 liked the vid while 24.6k of you people viewed what is think at least learn to be kind
Yeah only about 1% of people. At least you liked it I assume. Thanks for helping.
Understood 😊
Wow thanks, amazing helped me a lot
I don't usually comment on videos but I felt like I MUST SAY THANK YOU❤❤
For the last question, does it mean I don’t need to worry about negative solutions if the denominator is an odd number?
Yes
6:36 i don't understand the factorising part like why can't you just do 5 to the power of 59 - 5 to the power of 57 which is just 5 to the power of 2? and how do you factorise it like i don't understand why it's(5 squared - 1)
That is because 5 to the power 59 subtract 5 to the power 57 is not equal to 5 to the power 2. This would be if they were divided.
Try yourself. Is 2^5 - 2^3 = 2^2 ?
Why is this so HARD
Do you get given what you need to multiply by at the first step for the last two questions?
I don't think so, what would be the point if they are just telling us a step of the question? Good luck on your exam tomorrow, ive got it too lol
@@2_SS1a few hours now..good luck!
Is q2 not wrong because it’s 4x^1/3 multiplied by x^1/3 so shouldn’t u get 4x^2 and the 2/3??
This is the wrong video but for the question you refer to you add the 1/3 and 1/3 to get 2/3. Then the coeffcients multiplied are just 4 x 1 = 4.
So that answer is 4x^(2/3)
About the last question, do you mean the number for x (and x^5/3 and x^-1/3) can be negative but x^2/3 can not be a negative number?
It is just the idea that we don't need to dismiss any negative solutions. If there were a power 0.5 though we would.
@@1stClassMaths what about x^1/4 or x^1/6? does it mean x to the power of 1/even denominator will be positive?
We cannot have negative x values for those either :)
@@1stClassMaths thank you for confirmation, just want to make sure my concept is correct:) Btw your videos are really helpful, thank you again.
thought this was gases but at least I managed to practice a-level maths
Actually you can square root a negative no., they are generally written in form of i. Such as root of -5 will be 5i
This course does not cover complex numbers so we are working with real numbers only. As such, you cannot square root a negative number.
The square root of -5 is not 5i, it is actually root5 i.
@@1stClassMathspurrr
@@1stClassMathsdevoured
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