Need help !!!!

1st one : 12=12 , 12= 14, x = 4 (choose )

2nd one : no solution, one solution , infinitely many solutions ( choose )

3rd one : is exactly one value, is no value, are infinitely many values ( choose )

Need help 1st one 1212 12 14 x 4 choose 2nd one no solution one solution infinitely many solutions choose 3rd one is exactly one value is no value are infinitel class=