Cevap:
Yukarıdan aşğı sırayla
4x2-25=0 dan (2x-5)(2x+5)...çk={-5/2,5/2}
5x2-10x=0 dan 5x(x-2)........çk={0,2}
27x=3x2 den 3x2-27x=0 ise 3x(x-9)....çk={0,9}
3-x2=0 dan (V3-x) (V3+x).....çk={-V3,V3}
x2+4x+3=0 dan (x+3)(x+1).......çk={-3,-1}
16-x2=0 dan (4-x)(4+x)........çk={-4,4}
2x2-1/2=0dan x2=1/4........ Çk={-1/2,1/2}