Question

solve x⁴-2x³-x²-2x+1 = 0
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Answer 1

Answer:

$\color{red}\boxed{\sf x = -1}$

Step-by-step explanation:

➢x^4+x^3+x^3+x^2+x+1=0

➢x^3(x+1) +x^2(x+1) +1(x+1) = 0

➢(x+1)(x^3+x^2+1) = 0

➢(x+1) = 0 or x^3+x^2+1=0