How to add and subtract square roots ? (11 examples)
To add and subtract square roots from each other, the bases must be the same.
First you need to:
Decompose into prime factors (if you see perfect square roots it's better)
Simplify the root by taking out the groups of 2 identical
Multiply if necessary
Highlight if possible
Add or subtract if necessary
The best advice is to learn the multiplication tables by heart: (For square roots)
1*1=1
2*2=4
3*3=9
4*4=16
5*5=25
6*6=36
7*7=49
8*8=64
9*9=81
10*10=100
11*11=121
12*12=144
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See you next episode.
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