X^2 + y^2 + 34 - 6x + 10y = 0
x^2 - 6x + y^2 + 10y + 34 = 0
x^2 - 6x + 9 + y^2 + 10y + 25 = 0
(x - 3)^2 + (y + 5)^2 = 0
Точка с координатами (3; - 5)
см скрин
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Log8 1/2-log8 32=log8 1/2*32 =log 2³ 2⁻⁶=-6/3log2 2=-2
a) 5-x>0 x<5
b) x²-36>0 (x-6)(x+6)>0 -------- -6-----------6-------- x∈(-∞;-6)∪(6;∞)
+ - +
c) x²-4x+6 >0 D=16-24<0 → x∈(-∞;∞)