Question

7-root2 upon7+root2 =a+broot2 find value of a and b

Answer 1

Answer:

sqrt(2)+sqrt(7)/sqrt(2)-sqrt(7)=a+b

(sqrt(2)+sqrt(7))^2/2-7=a+b

2+7+2sqrt(14)/-5=a+b

-9/5+(-2sqrt(14)/5)=a+b

a=-9/5

b=-2sqrt(14)/5