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express this in rational form and multiply 1 please make me as brainlist
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Step-by-step explanation:
We have to multiply and divide the denominator with opposite sign to rationalize the denominator.
in the third step the denominator is 7-4 because as you know if there is square root on any no. and it has square that is (x)² then the root cancels out and the number remains .
I hope you understand.
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