7+3√3/5+4√3=a√3+b.
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Answer:
5+2√3/7+4√3
=5+2√3/7+4√3*(7-4√3/7-4√3)
=[(5+2√3)(7-4√3)] / 49-48
=5(7-4√3)+2√3(7-4√3)
=35-20√3+14√3-24
=11-6√3
=11+(-6)√3
Therfore, a=11 and b=(-6)
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