Question

write the simplest rationalisation factor of
1).√32
2). 3√49
3). 4√25
4). 5√a^2b^3c^4
5). 5√486
6). 2√5-√3

Please anybody give me answer because I asked this question many times but nobody has given me the answer
Please give the answer
please........
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Answer 1

Answer:

1).2^5= √32= 2×2×2×2×2

2).21

3).20