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secondary 3 | A Maths
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Date Posted: 3 years ago
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To eliminate surds in the denominator, we introduce what we call the conjugate of the expression. Two expressions in the form a + b and a - b are said to be conjugates of each other.
So, if your surd-containing denominator is in the form a + b, you introduce a - b to BOTH the numerator and the denominator to keep equality on the fraction and to eliminate surds in the denominator. There is no restriction on surds in the numerator, however.
So, if your surd-containing denominator is in the form a + b, you introduce a - b to BOTH the numerator and the denominator to keep equality on the fraction and to eliminate surds in the denominator. There is no restriction on surds in the numerator, however.
Date Posted:
3 years ago
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