(d−7)⋅(d+4)−(d+5)⋅(d−13)=d^2+4d-7d-28-(d^2-13d+5d-65)=d^2+4d-7d-28-d^2+13d-5d+65=5d+37,при d= -0,11
5*0,11+37=0,55+37=37,55
(d−7)⋅(d+4)−(d+5)⋅(d−13)=d^2+4d-7d-28-(d^2-13d+5d-65)=d^2+4d-7d-28-d^2+13d-5d+65=5d+37,при d= -0,11
5*0,11+37=0,55+37=37,55