Răspuns :
0,25×x²=1/4;
25/100×x²=1/4;
1/4×x²=1/4;
x²=1/4:1/4;
x²=1;
x=√1;
x=1;
25/100×x²=1/4;
1/4×x²=1/4;
x²=1/4:1/4;
x²=1;
x=√1;
x=1;
Facem inmultirea in cruce.
0,25 x la puterea a doua ori 4 = 1
1 ori x la puterea a doua = 1
x la puterea a doua = 1
0,25 x la puterea a doua ori 4 = 1
1 ori x la puterea a doua = 1
x la puterea a doua = 1