Объяснение:
y=-x^2+3x+4
x0=-b/2a
x0=3/2
y0=4-9/4+9/2= 25/4=6,25
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Объяснение:
y=-x^2+3x+4
x0=-b/2a
x0=3/2
y0=4-9/4+9/2= 25/4=6,25