M≠0, |m|+5≠0
m ∈ (-∞; 0) объединение (0; + ∞)
(a-b)^2=a^2-2ab+b^2
(2x-1)^2
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Y ' = (√(2x + 5) )' = 2/2√(2x + 5) = 1 /(√2x + 5)
x0 = 2
y ' (2) = 1/(√(4+5)) = 1/√9 = 1/3
х³+3х²-х-3=0
x²(x+3)-(x+3)=0
(x+3)(x²-1)=0
(x+3)(x-1)(x+1)=0
x₁=-3, x₂=-1, x₃=1