Question

Answer the ques of attachment​

Answer 1

Answer:

Step-by-step explanation:

Sorry but i only know the first one.

But if you rationalize each term separately in Q80 like first term then the second term you will get the answer.

A79) Put $\sqrt{5}$ = 2.24

And then simple multiplication:

=> $\frac{3(2.24)}{(2(2.24))-0.48}$

=> $\frac{6.72}{4.48-0.48}$

=> $\frac{6.72}{4}$

=> $\frac{672}{400}$

[ By dividing and multiplying by 4]

=> $\frac{168}{100}$

=> $1.68$

Answer 2

Heya mate!!

$3 + \sqrt{8} - \sqrt{8} - \sqrt{7} + \sqrt{7} + \sqrt{6} - \sqrt{6} - \sqrt{5} + \sqrt{5} + 2 = 5$

Hope it helps u dear✌️✌️