Question

2akar20+akar28-3akar125+4akar63-5akar80

Answer 1

2√20 + √28 - 3√125 + 4√63 - 5√80
= 4√5 + 2√7 - 15√5 + 12√7 - 20√5
= 4√5 - 15√5 - 20√5 + 2√7 + 12√7
= -32√5 + 14√7



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