14b+(b+7)(b-7)+(b-7)^2 при b=-0,3
плиз​

14*(-0.3)=-1.2

0.3+7=7.3

0.3-7=-6.7

7.3*(-6.7) = - 48.91

-1.2-48.91=-50.11

0.3-7=-6.7*-6.7=44.89

-50.11+44.89=5.22

Ответ:5.22