Rationalise the factor of 7-2√3?
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Step-by-step explanation:
7-2√3 × 7+2√3 ÷ 7+2√3
(7)² - (2√3)² ÷ 7+2√3
49 - 12 ÷ 7+2√3
37 ÷ 7 + 2√3
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