Laws of Indices - Tutorial 1 - adding & subtracting powers of numbers

We learn the laws of indices for adding and subtracting powers of numbers. In particular we learn that there is no quick way to simplify two powers of numbers being added, or subtracted.

[emilevi]

Thank you! My teacher isn't the best at explaining things, this really saved me

[slimey]

3:29 great explanation so far, but how does 3x5^7 - 5^7= 2x5^7? where did you get the two from?

[johnmoor]

a straight answer at last, thank you.

[sarahjones]

none of these methods work it out algebraically, we have to leave it as a value with an index. INFURIATING

[rashmipathania]

What if the bases and powers are in bigger number. How to solve quick

5²⁰ - 5¹⁹/20

[martinsilcock]

Really useful, it’s hard to find an understandable explanation to this problem

[naohaotingala]

Thank you, this was very helpful. It was on an extension question, and everyone overthought it and thought there was some kind of special formula for it. But (2^n+1) + (2^n+1) was just (4^n+1) .






lol

[coreisakemp]

How did you come up with the answer for number 4 didn't really get how you come up with the 2

[lazy]

what about a^m + b^m ? But I gguess it'll be just equal to itself

[gabiherman]

What if you are adding or subtracting with the same base and same indices

[AbuzarbhuttaG]

√x + √y is is equal or not to whole square root of (x + y)...?

[uzochukwuokpala]

How do we solve this I. Indices (1-4)^-2

[bangtanmimi]

hey sir what about e^a+b
and e^a + e^b ?

[AbrtedFetus]

For example 4 why is there a three in front of all the working out? I think u forgot to add it

[monicandakolo]

Hi
What if you are subtracting, where bases are not the same but the indices are?

[bronzegoddess]

I'm lost at 2 raised to the power 5 = 32?

[thaingoc]

Some segments in the video are stamped not adjacent to each other

[ardimahardikawidyatmokoxg]

finally someone explains it in a simple way 😊

[AllariAbhinay]

Tell me the answer for this question with detail explanation question - 7 power 12 minus 4 power 12 equals to how much

[perryfroze]

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