1) 4x²+2x+8 = 0
2) 5x²+3x+15 = 0
3) x²+8,1x=0
4) 7x²+2x+9=0
5) 4x²+8=0
6) 4x²=0
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Answers & Comments
1) 4x²+2x+8 = 0
2) 5x²+3x+15 = 0
3) x²+8,1x=0
4) 7x²+2x+9=0
5) 4x²+8=0
6) 4x²=0