Question

(3√5 - 2)(3√5 - 1) + 9√5

Answer 1

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

Answer 2

(3√5 - 2)(3√5 - 1) + 9√5=48
45-3√5-6√5+3+9√5=45+3=48
Ответ 48