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AndriiKushch
@AndriiKushch
November 2021
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Решите уравнение срочнооооооооо(нижнее)
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editasinger
X^2 + x = (x+3) (3x-2) - 2
x^2 + x = 3x^2+7x-8
x^2 + 3x - 4 = 0
x1 = -4, x2 = 1
1 votes
Thanks 1
Leogart
X^2+x=(x+3)(3x-2)-2
x^2+x=3x^2-2x+9x-6-2
x^2+x=3x^2+7x-8
x^2-3x^2+x-7x+8=0
-2x^2-6x+8=0
D=36-4*-2*8=100
x1=(6-10)/-4=1
x2=(6+10)/-4=-4
1 votes
Thanks 1
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Answers & Comments
x^2 + x = 3x^2+7x-8
x^2 + 3x - 4 = 0
x1 = -4, x2 = 1
x^2+x=3x^2-2x+9x-6-2
x^2+x=3x^2+7x-8
x^2-3x^2+x-7x+8=0
-2x^2-6x+8=0
D=36-4*-2*8=100
x1=(6-10)/-4=1
x2=(6+10)/-4=-4