A/a - a/a=0 ; b - b =0 b ; 0*a = 0 ; 0 + b/a = b/a
Ответ: b/a
12х + 4 - 8х +5 < 1 + 4x
12x - 8x - 4x < 1 - 4 - 5
0 < -8
Решений нет.
(3x² -7x+2)/(2-6x) =3(x-1/3)(x-2)/(-6(x-1/3)) = (2-x)/2 . * * * x≠1/3 * * *
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(x+40)/(x³-16x) :((x-4)/(3x² +11x-4) - 16/(16-x²)) =
(x+40)/x(x²-16) :( (x-4)/3(x+4)(x-1/3) +16/(x² -16))=
(x+40)/x(x²-16) :( (x-4)/(x+4)(3x-1) +16/(x² -16))=
(x+40)/x(x²-16) :( ((x-4)² +16(3x-1)) /(x²-16)(3x-1))=
(x+40)/x(x²-16) :( (x²-8x+16 +48x-16) / (x²-16)(3x-1)) =
x+40)/x(x²-16) :( (x² +40x) / (x²-16)(3x-1))
(x+40)/x(x²-16) *(x²-16)(3x-1)/(x²+40) = (3x-1)/x * * * x≠<span>±4 * * *</span>
<span>10 100 1 1000
наверное так</span>