simplify √312+√135+√81
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Answer:
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Step-by-step explanation:
Factor out 135 completely so you can take out any perfect squares.
√
135
=
√
3
⋅
3
⋅
3
⋅
5
=
√
3
2
⋅
3
⋅
5
=
3
√
3
⋅
5
=
3
√
15
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