Question

Rationalise:
Help please guys
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Answer 1

Answer:

this is the answer with solition

please make brainilst

Answer 2

2√2/10

Step-by-step explanation:

1/√2+√5+√7×√2-√5+√7/√2-√5+√7=√2-√5+√7/(√2-√5+√7)²=√2-√5-√7/2-5+7=-√3+√7/10=2√2/10