Rationalise 7/3root5 - 2root3
Answers
Answered by
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Step-by-step explanation:
7/3√5-2√3
(7√5-6√3)/3
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Answered by
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Answer:
= 21√5 + 14√3 ÷33
Step-by-step explanation:
= 7 ÷ 3√5 - 2√3 × 3√5 + 2√3 ÷ 3√5 + 2√3
= 21√5 + 14√3 ÷ (3√5)²- (2√3)²
= 21√5 + 14√3 ÷ 9×5 - 4×3
= 21√5 + 14√3 ÷ 45 - 12
= 21√5 + 14√3 ÷ 33
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