0=2x-1/3x+2 <span>sinx = </span>(2x+5) (x-1)sin 4x cos 2x= sin 2x cos 4x
3* pi +2 * pi/2 = 4 pi
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X^2-ax+2a=0
a=1 b=-a c=2a
D=b^2-4ac= (-a)^2-4×1×2a=a^2-8a>0
a^2-8a>0
a(a-8)>0
(-oo;0)u(8;oo)
(12х) ²-9 ²=(12-9)(12+9)=3*21=63
приводим к разности квадратов
(√16)³ * (√16)⁶ = (√16)³⁺⁶ = (√16)⁹ = 16 ¹/²*⁹ = 16 ⁹/² = (2⁴)⁹/² = 2 ⁴*⁹/² = 2¹⁸ = 262144