Решение
lim x-> 1 (x³-1)/(x²-1) =lim x-->1 [(x - 1)(x² + x + 1)] / [(x - 1)*(x + 1)] =
= limx ->1 (x² + x + 1)/(x + 1) = (1² + 1 + 1) / (1 + 1) = 3/2 = 1,5
-3tg(Pi/6) + 4sin(Pi/3) = -3*√3 / 3 + 4* √3/2 = 2√3 - √3 = √3
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Х-7÷8=0,01
х-7=0,01×8=0,08
х=0,08+7
х=7,08