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jonny [76]
3 years ago
11

How to find the discriminant of

Mathematics
1 answer:
Evgen [1.6K]3 years ago
6 0

the discriminant   b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0


13x^2-16x = x^2 -x


we need to get in it the standard form


subtract x^2 from each side


12x^2 -16x = -x


add x to each side


12x^2 -15x = 0


12x^2 -15x -0 =0


a=12 b=-15 c=0


b^2 -4ac


the discriminant = b^2


b^2 = (-15)2 = 225




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