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aleksandrch1
@aleksandrch1
July 2022
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Решите, пожалуйста.(3b+5)x^2-2(b-1)x+2=0.
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aruna022
3bx^2+5x^2-2bx+2x+2=0
bx(3x-2)+x(2b+2)=-2
bx= -2 x= -2
3x-2=-2
2x=0
x=0
2b+2=-2
2b=0
b=0
5 votes
Thanks 3
anastasiyayeranova
Почему 3х - 2 = -2, 3х = -2 + 2 = 0, то 2b + 2 = -2, 2b = -2 - 2 = 0, когда -2 - 2 = -4?
anastasiyayeranova
И если исходить из логики того, что х и b равно по нулю, то в итоге равенство будет равно 2, а не 0...
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Answers & Comments
bx(3x-2)+x(2b+2)=-2
bx= -2 x= -2
3x-2=-2
2x=0
x=0
2b+2=-2
2b=0
b=0