(3 \sqrt{5}-2)(3 \sqrt{5} -1) do you know de way do you know de way do you know

Question

(3 \sqrt{5}-2)(3 \sqrt{5} -1) do you know de way do you know de way do you know

Answer 1

(3√5 - 2)(3√5 - 1) =
= (3√5)^2 - 3√5 - 2*3√5 + 2 = 
= 9*5 - 3√5 - 6√5 + 2 = 
= 45 - 9√5 + 2 = 
= 47 - 9√5