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Karalica
@Karalica
June 2021
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jlijlit
A) x^2-19x+90=0
(x-10)(x-9)=0
x-10=0
x-9=0
x=10; x=9.
б) x^2+x-6=0
(x-2)(x+3)=0
x-2=0
x+3=0
x=2; x=-3.
в) 9x^2-12x+4=0
x^2-4x/3+4/9=0
(x-2/3)^2=0
x=2/3
г) 24x^2+17x+3=0
(3x+1)(8x+3)=0
3x+1=0
8x+3=0
3x=-1
8x=-3
x= - 1/3; x= -3.
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Answers & Comments
(x-10)(x-9)=0
x-10=0
x-9=0
x=10; x=9.
б) x^2+x-6=0
(x-2)(x+3)=0
x-2=0
x+3=0
x=2; x=-3.
в) 9x^2-12x+4=0
x^2-4x/3+4/9=0
(x-2/3)^2=0
x=2/3
г) 24x^2+17x+3=0
(3x+1)(8x+3)=0
3x+1=0
8x+3=0
3x=-1
8x=-3
x= - 1/3; x= -3.