Rationalize the denominator of
1/2+5√7
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Step-by-step explanation:
Rationalizing
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1/(2+5√7)
=(1/(2+5√7))×((2-5√7)/(2-5√7)
=(2-5√7)/((2^2)-(5√7)^2)
=(2-5√7)/(4-(25×7))
=(2-5√7)/(4-175)
=(2-5√7)/(-171)
=(5√7-2)/171
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