5√2/2√2+7 rationalise the denominator
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Answer:
20 - 35√2 / 41
Step-by-step explanation:
5√2 / 2√2+7 = 5√2 ( 2√2 - 7 ) / ( 2√2 + 7 ) ( 2√2 - 7 )
= 20 - 35√2 / 2√2 ^2 - 7^2
= 20 - 35√2 / 8 - 49
= 20 - 35√2 / 41
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