Решите уравниние:
12x^2-5x+(1+3x)(1-3x)-3(x-2)(x+3)-6=21
zaranee ogromnoe spasibo)))
kstati uravnenie za 7 klass) v otvete skazano, 4to doljno poluchit'sya -1 ))) rewite pliiizz)
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Решите уравниние:
12x^2-5x+(1+3x)(1-3x)-3(x-2)(x+3)-6=21
zaranee ogromnoe spasibo)))
kstati uravnenie za 7 klass) v otvete skazano, 4to doljno poluchit'sya -1 ))) rewite pliiizz)
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12x^2-5x+(1+3x)(1-3x)-3(x-2)(x+3)-6=21
12x^2-5x+1-3х+3х-9х^2-3(x^2+3x-2x-6)-6-21=0
12x^2-5x+1-3х+3х-9х^2-3x^2-9x+6x+18-6-21=0
-8x-8=0
8x+8=0
8x=-8
x=-1