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karinazholdubaeva
@karinazholdubaeva
August 2022
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2x^3-x^2-32x+16=0
(y+6)^2-(y+5)(y-5)=79
Решите пожалуйста! !
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Мажорище
1) 2x^3-x^2-32x+16=0
x^2(2x-1)-16(2x-1)=0
(x^2-16)(2x-1)=0
x^2-16=0 или 2x-1=0
x^2=16 2x=1
x=±√16 x=1/2
x=
±4
Ответ: -4, 1/2, 4
2) (y+6)^2-(y+5)(y-5)=79
y^2-12y+36-y^2+25=79
-12y+36+25=79
-12y=79-36-25
-12y=18 | : (-12)
y= -18/12
y= -1,5
Ответ: -1,5.
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Answers & Comments
x^2(2x-1)-16(2x-1)=0
(x^2-16)(2x-1)=0
x^2-16=0 или 2x-1=0
x^2=16 2x=1
x=±√16 x=1/2
x=±4
Ответ: -4, 1/2, 4
2) (y+6)^2-(y+5)(y-5)=79
y^2-12y+36-y^2+25=79
-12y+36+25=79
-12y=79-36-25
-12y=18 | : (-12)
y= -18/12
y= -1,5
Ответ: -1,5.