Math, asked by ambi99029, 10 months ago

if x =3+2√2 then find whether x+1÷x

Answers

Answered by SanrzDk
0

Answer:

if \: x = 3 + 2 \sqrt{2 }  \\  \\  \:  \:  \:  \:  \:  \:  \:  \: than \:  \: x + 1 \div x \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = 3 + 2 \sqrt{2 }  + 1 \div 3 + 2 \sqrt{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: =  \: 4 + 2 \sqrt{2} \times  \frac{1}{3 + 2 \sqrt{2} }   \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   =  \frac{4 + 2 \sqrt{2} }{3 + 2 \sqrt{2} }  \times  \frac{3 - 2 \sqrt{2} }{3 - 2 \sqrt{2} }  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:    =    \frac{12 - 8 \sqrt{2 } + 6 \sqrt{2} - 8  }{9 - 8}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   = \frac{4 - 2 \sqrt{2} }{1}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2(2 -  \sqrt{2} ) \: ans.

Similar questions