Question

(d-7)*(d+3)-(d+5)*(d-15)
при d= -0.14

Answer 1

(-0.14-7)*(-0.14+3)-(-0.14+5)*(-0.14-15)=53.16
1)(-0.14-7)*(-0.14+3)=-7.14*2.86=-20.4204
2)(-0.14+5)*(-0.14-15)=4.86*(-15.14)=-73.5804
3)-20.4204-(-73.5804)=-20.4204+73.5804=53.16