What is the value of b^2-4ac for the following equation: 2x^2+3x=-1?

1 Answer
Jim G.
Mar 4, 2018

b^2-4ac=1

Explanation:

"for a quadratic equation in "color(blue)"standard form"

•color(white)(x)ax^2+bx+c=0color(white)(x);a!=0

"then the "color(blue) "discriminant "Delta=b^2-4ac

"rearrange "2x^2+3x=-1" into standard form"

rArr2x^2+3x+1=0larrcolor(blue)"in standard form"

"with "a=2,b=3" and "c=1

rArrb^2-4ac

=3^2-(4xx2xx1)=9-8=1

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