Simplifying Surds in equations
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Adding/Subtracting Surds
You can only add/subtract surds when the root part is the same
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Expanding Surds
Use distributive property (FOIL just like with algebra)
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Solving equations involving surds
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Why Rationalise the denominator?
Because leaving surds in the denominator is considered “untidy” or less exact in mathematical writing.
Note 
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