Question

Daca x×(y-z)=2.4 si x×(z+t)=3.1,calculati x×2.4×(y+t)=?​

Answer 1

Răspuns:

13.2

Explicație pas cu pas:

x(y - z) = 2.4

x(z + t) = 3.1

adunam relatiile

xy - xz + xz + xt = 2.4 + 3.1

xy + xt = 5.5

x(y + t) = 5.5

x·2.4·(y + t) =

= 2.4·x·(y + t)

= 2.4·5.5

= 13.2

Answer 2

Răspuns:

x(y-z)=2,4

x(z+t)=3,1

xy-xz+xz+xt=2,4+3,1

xy+xt=5,5

x(y+t)=5,5

x·2,4·(y+t)=2.4·x·(y+t)=2,4·5,5=13,2