please answer question 1 urgently
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5+2√3/ 7+4√3. =a-b√3
first rationalise the denominator
5+2√3 × (7-4√3) / 7+4√3 ×(7-4√3)
35-20√3+14√3-24 /49-48
11-6√3 /1= a- b√3
so
a=11. and. b=6
first rationalise the denominator
5+2√3 × (7-4√3) / 7+4√3 ×(7-4√3)
35-20√3+14√3-24 /49-48
11-6√3 /1= a- b√3
so
a=11. and. b=6
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