Question

Ze wzoru a=bc^2\4 wyznacz b.

Answer 1

a=bc*2/4  ;b

4a=4bc*2

4bc*2=4a  /c

4b*2/c=4a/c

4b=4a/c : 2/c

4b=4a/c * c/2

4b=4a/c*c/2

4b=4a/2  /*2

8b=4a /8

b=4a/8

b=1/2b