Ответ:
a) 2x²-5x+10=0.
a=2, b=-5, c=10.
б) 5x-x²=0, -x²+5x=0.
a=-1, b=5, c=0.
c) 8x²-7=0.
a=8, b=0, c=-7.
d) 9z²=0.
a=9, b=0, c=0.
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Ответ:
a) 2x²-5x+10=0.
a=2, b=-5, c=10.
б) 5x-x²=0, -x²+5x=0.
a=-1, b=5, c=0.
c) 8x²-7=0.
a=8, b=0, c=-7.
d) 9z²=0.
a=9, b=0, c=0.