Rationalise the denominator of
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30/5- 3
=30/5- 3
x 5
+3
=30( 5+3
) / (5
)² -(3
)²
=30 (5- 3
) / 75- 45
= 30 (5- 3
) / 30
= 5- 3
{30 and 30 will get cancelled)
Sandip444:
I didn't understand ??
In second line I forgot to write something
30 /5 sqrt 3 - 3 sqrt 5 x 5 sqrt 3+ 3 sqrt 5 / 5 sqrt 3 +3 sqrt 5
I hope u understood now :)
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