A) 2x^5+9-(x+1)(x^2-x+1)=2x^5+9-x^3-1=0,5^3(2x^2-1)+8=7,9375
б) x(x^2-4)-(x^2-9)(x+3)=x^3-4x-x^3+9x-3x^2+27=5*0,25-3*(0,25^2)+27=28,0625
в) x^3-(x-1)(x+1)^2=x^3-x^3-x^2+x+1=(7^2/3^2)-(7/3)+1=4+(1/9)
г) (2x-1)(2x+1)^2=(4x^2-1)(2x+1)=(0,5-1)(1-0,5)=-0,25
д) a^3-3a^2+3a-1+3a^2+3=a^3+3a+2=-2,5^3-3*2,5+2=-21,125