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Happiness20122012
@Happiness20122012
August 2021
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уравнения решите срочно!!!
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BJIADA
(x-3)²=(3x-5)²
x²-6x+9=9x²-30x+25
x²-6x+9-9x²+30x-25=0
-8x²+24x-16=0 |:(-8)
x²-3x+2=0
D=b²-4ac=(-3)² - 4*1*2=9-8=1
x₁=
-b+√D/2a=3+1/2=
2
x₂=
-b-√D/2a=3-1/2=
1
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Answers & Comments
x²-6x+9=9x²-30x+25
x²-6x+9-9x²+30x-25=0
-8x²+24x-16=0 |:(-8)
x²-3x+2=0
D=b²-4ac=(-3)² - 4*1*2=9-8=1
x₁=-b+√D/2a=3+1/2=2
x₂=-b-√D/2a=3-1/2=1