Question

Solve the ques a=3 +root 8
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Answer 1

Answer:

4$\sqrt{2\\}$

Step-by-step explanation:

a=3+$\sqrt{8}$

1/a  =  1/(3+$\sqrt{8}$)

rationalize the denominator

(3-$\sqrt{8}$)/(9-8)

=3-$\sqrt{8}$

a - 1/a = 3+$\sqrt{8}$   - 3+

           = 2$\sqrt{8}$  =4$\sqrt{2\\}$