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Mathematics for IGCSE & O level - Surds (Section 1 - No. 21)

Rationalize the denominator of 4 / (√7 + √3).
√7 - √3
√7 + √3
√7 - √3/4
√7 + √3/4

解释

4/(√7+√3) * (√7-√3)/(√7-√3) = 4(√7 - √3) / 4 = √7 - √3

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