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8california8
@8california8
July 2022
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Умоляю помогите выделить полный квадрат:
1) y=x^2+4x+5
2) y= -x^2+2x-3
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ShirokovP
Verified answer
1)
y = x^2 + 4x + 5 = x^2 + 4x+ 4 + 1 = (x + 2)^2 + 1
2)
y = - (x^2 - 2x + 3) = - (x^2 - 2x + 1 + 2 ) = - ((x - 1)^2 + 2) =
= - (x - 1)^2 - 2
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Answers & Comments
Verified answer
1)y = x^2 + 4x + 5 = x^2 + 4x+ 4 + 1 = (x + 2)^2 + 1
2)
y = - (x^2 - 2x + 3) = - (x^2 - 2x + 1 + 2 ) = - ((x - 1)^2 + 2) =
= - (x - 1)^2 - 2