a) \(x^3-4x^2-8x+8=x^2\left(x+2\right)-6x\left(x+2\right)+4\left(x+2\right)=\left(x^2-6x+4\right)\left(x+2\right)\)
\(=\left(x-3-\sqrt{5}\right)\left(x-3+\sqrt{5}\right)\left(x+2\right)\)
b) Chưa ra
c) \(x^2\left(x-2022\right)-x+2022=\left(x^2-1\right)\left(x-2022\right)=\left(x-1\right)\left(x+1\right)\left(x-2022\right)\)
d) \(x^2-8x+15=x\left(x-3\right)-5\left(x-3\right)=\left(x-5\right)\left(x-3\right)\)
e) \(4x^2-3x-1=4x\left(x-1\right)+x-1=\left(4x+1\right)\left(x-1\right)\)
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