Question

Rationalising the denominator

Answer 1

Rationalising the denominator easy

suppose 1/√2

we can rationalising as

1/√2×√2/√2 =√2/2

suppose in addition or minus

we can rationalising as

1/√2+√3×√2-√3/√2-√3=√2-√3/4-3=√2-√3/1

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