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danielk1
@danielk1
July 2022
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Разложите на множители плииз срочно!!
-2х^2-7х+4
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Лотарингская
Verified answer
Ax^2+bx+c=a(x-x1)(x-x2), где х1 и х2 корни уравнения ax^2+bx+c=0
-2x^2-7x+4=0
D=49+4*2*4=81
x1=(7+9)/(-2*2)=-4
x2=(7-9)/(-2*2)=1/2
-2x^2-7x+4=-2(x+4)(x-1/2)
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Answers & Comments
Verified answer
Ax^2+bx+c=a(x-x1)(x-x2), где х1 и х2 корни уравнения ax^2+bx+c=0-2x^2-7x+4=0
D=49+4*2*4=81
x1=(7+9)/(-2*2)=-4
x2=(7-9)/(-2*2)=1/2
-2x^2-7x+4=-2(x+4)(x-1/2)