Question

rationalise the denominators of the following: (I) 5+2root 3 of 7+4 root 3

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Answer 1

Answer:

(a+b)(a-b)=(a)^2-(b)^2

Answer 2

Answer:

$\frac{5 + 2 \sqrt{3} }{7 + 4 \sqrt{3} } \times \frac{7 - 4 \sqrt{3} }{7 - 4 \sqrt{3} } = \frac{35 - 24}{49 - 48} = \frac{11}{1}$

Step-by-step explanation:

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