History, asked by ayanpal36, 7 months ago


 \sqrt{7 + 2 \sqrt{12} }

Answers

Answered by Bipasha321
0

Answer:

So, let

7–√+43–√=(a+bc√)2⇒7–√+43–√=a2+b2c+2abc√

Then, squaring both sides

55+821−−√=a4+441b4+126a2b2+4ab(a2+21b2)21−−√.

Then

a4+441b4+126a2b2=55 and 4a3b+84ab3=8

and so

⇒a2+21b2=2ab⇒a4+441b4=4a2b2−42a2b2.

Then

84a4b4−55a2b2+4=0⇒a2b2=47,112.

Explanation:

Hope it's help

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