1.

(4 root3 + 5 root2) / ( root48 + root18)

Answer»

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(4√3+5√2)/(√48+√18)
=[4√3++5√2] [4√3-3√2] /[4√3+3√2] [4√3-3√2]
=[48-12√6+20√6-30] / [48-12√6+12√6-18]
=[18+8√6] / 30
=[9+4√6]/15
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