solve x4-5x3+4x2+8x-8=0 given that 1+√5 is a root
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Step-by-step explanation:
Y=(5x24x²-8x) 5x3- 4x²-8x
=x(5x²-4x-8) Ex(5x²-10x+4x-8)
= x (5x(x-3)+4Ca-2)
= x (a-2) (51+4) Y
= (2)(Gc-2)(5x-4)
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