①x2=4
②2x2+y=5
③ 3 x+x2﹣1=0
④5x2=0
⑤3x2+ x2 +5=0
⑥3x3﹣4x2+1=0.
下列各组中的两个分式不相等的是( )
计算: −273+16−214 .
Lucy has put on too much weight because of her ____ (healthy) diet.