Question

Slove x²-5x+1=0 By Discrinment method

Answer 1

Answer:

Step-by-step explanation:

D=(B)²-4(A×C)

THEREFORE ,

D=(-5)²-4(1×1)

D=25-4

D=21

WE KNOW THAT ,

α=(-B+√D)÷2(A)

α={-(-5)+√21}÷2(1)

α=(5+√21)÷2

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β=(-B-√D)÷2(A)

β={-(-5)-√21]÷2(1)

β=(5-√21)÷2

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