решите уровнения:
а) (х-6)^2 -х(х+8)=2
б) 9х(х+6)-(3х+1)^2=1
в) х(х-1)-(х-5)^2=2
г) 16х(2-х)+(4х-5)^2=1
а) х^2 - 12x + 36 - x^2 - 8x = 2;
-20x = -34;
x = -1,7.
б) 9x^2 + 54x - 9x^2 - 6x - 1 = 1;
48x = 2;
x = 1/24.
в) x^2 - x - x^2 + 10x - 25 = 2;
9x = 27;
x = 3.
г) 32x - 16x^2 + 16x^2 - 40x + 25 = 1;
-8x = -24;
x²-12x+36-x²-8x=2
-20x=-34
x=1,7
9x²+54x-9x²-6x-1=1
48x=2
x=1/24
x²-x-x²+10x-25=2
9x=27
x=3
32x-16x²+16x²-40x+25=1
-8x=-24
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Answers & Comments
а) х^2 - 12x + 36 - x^2 - 8x = 2;
-20x = -34;
x = -1,7.
б) 9x^2 + 54x - 9x^2 - 6x - 1 = 1;
48x = 2;
x = 1/24.
в) x^2 - x - x^2 + 10x - 25 = 2;
9x = 27;
x = 3.
г) 32x - 16x^2 + 16x^2 - 40x + 25 = 1;
-8x = -24;
x = 3.
а) (х-6)^2 -х(х+8)=2
x²-12x+36-x²-8x=2
-20x=-34
x=1,7
б) 9х(х+6)-(3х+1)^2=1
9x²+54x-9x²-6x-1=1
48x=2
x=1/24
в) х(х-1)-(х-5)^2=2
x²-x-x²+10x-25=2
9x=27
x=3
г) 16х(2-х)+(4х-5)^2=1
32x-16x²+16x²-40x+25=1
-8x=-24
x=3