Question

√5x²-x-√5=0 Find the value of discriminant for this equation.

Answer 1

$d = b ^{2} - 4ac \\ = ( - 1)^{2} - 4 \ \: ( \sqrt{5} )( \ - \sqrt{5}) \\ = 1 + 20 \\ = 21$

Answer 2

Answer:

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