Question

what would be the denominator after rationalising 7 by 5 root 3 minus 5 root 2

Answer 1

Answer:

25

Step-by-step explanation:

By rationalising $5\sqrt{3} - 5\sqrt{2}$ ,we get

$5\sqrt{3}-5\sqrt{2} * 5\sqrt{3}+5\sqrt{2}$

= by a^2 -b^2 = (a+b)(a-b)

=25*3 - 25*2

=75-50

=25

Therefore the denominator is 25.

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Answer 2

Answer:

25 is your answer