Question

Maths question. The question is in the picture attached below

Answer 1

Explanation:

(10 - sqrt(18))/sqrt(2) = (10 - sqrt(2×9))/sqrt(2) =

= (5×2 - 3×sqrt(2))/sqrt(2) =

= (5×sqrt(2)×sqrt(2) - 3×sqrt(2))/sqrt(2) =

= 5×sqrt(2) - 3

so,

a = -3, b = 5