What is the discriminant of the quadratic equation 2x + 5x2 = 1?

Asked by maham237 @ 27/12/2020 in Mathematics viewed by 386 People

Answered by maham237 @ 27/12/2020

$5x^2+2x-1=0$

Delta equation is:

$\Delta =\frac{-b\pm\sqrt(b^2-4ac)}{2a}$

but we are interested in $b^2-4ac$ because it determines the discriminant

$5^2-4*2*(-1)=25+8=33$

$33>0$

which means that discriminant is positive :)

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