rationalise 1 upon 7+5 under 2
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Step-by-step explanation:
1/7+5√2
By rationalization,
= 1/7+5√2 × 7-5√2/7-5√2
= 7(7-5√2)/(7+5√2)(7-5√2)
= 7(7-5√2)/7^2-(5√2)^2
= 7(7-5√2)/49-50
= 7(7-5√2)/-1
= -7+5√2
Hope its useful to u
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