Question

Wyznacz ze wzoru F:
a= 3(F+T)/m

Oblicz:
7(x^2-3)-(12-5x^2)

Answer 1

A= 3F + 3T/m  //*m
3F+3T= a*m    //-3T
3F= a*m-3T    //:3
F=  a*m-3T/3

7x^2-21-12+5x^2= 13x^2 - 33