(d-9)(d+3)-(d+5)(d-13) = d²+3d-9d-27-(d²-13d+5d-65)=d²-6d-27-(d²-8d-52)=d²-6d-27-d²+8d+52=2d+38=-0,38+38=37,62
Объяснение:
(d²+3d-9d-27) - (d²-15d+5d-75) = d²+3d-9d-27 -d²+15d-5d+75=4d+48
4*(-0.11) +48= -0.44 +48= 47.56
(d-9)(d+3)-(d+5)(d-13) = d²+3d-9d-27-(d²-13d+5d-65)=d²-6d-27-(d²-8d-52)=d²-6d-27-d²+8d+52=2d+38=-0,38+38=37,62
Объяснение:
(d²+3d-9d-27) - (d²-15d+5d-75) = d²+3d-9d-27 -d²+15d-5d+75=4d+48
4*(-0.11) +48= -0.44 +48= 47.56