Question

a^2-9b^2/2a^2*a/2a-6b при a=корень75, b=корень24

Answer 1

(a-3b)(a+3b)/2a ²* a/2(a-3b)=(a+3b)/4a=(5√3+3*2√3)/4*5√3=11√3/20√3=11/20