Answer:
3√63 = 3.3.√7 = 9√7
2√28 = 4√7
√112 = 4√7
according to question
3√63 - 2√28 -√112
=> 9√7 -4√7 - 4√7
= > 9√7 -8√7
=> √7
this is the correct answer of your question
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Answer:
3√63 = 3.3.√7 = 9√7
2√28 = 4√7
√112 = 4√7
according to question
3√63 - 2√28 -√112
=> 9√7 -4√7 - 4√7
= > 9√7 -8√7
=> √7
this is the correct answer of your question