225x²+4=0
225x²=0-4
225x²=-4
x²=-4/225
x=±√-4/225
a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )
step-by-step explanation:
1) 2/5
2) zero=0/1
3) zero=0/2
4) -4/5
5) undefined=3/0