croberts37 croberts37

09-03-2017
Mathematics

contestada

Use the quadratic formula to solve the quadratic equation x2 − 8x − 4 = 0.

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ghanami ghanami

11-03-2017

Hello here is a solution :
x² − 8x − 4 = 0.
quadratic equation ax²+bx+c = 0 when : a=1 and b= -8 and c = -4
discriminant : d = b²-4ac d= (-8)²-4(1)(-4) =64+16 =70
x= (-b-rot(d))/2a x'= (-b+rot(d))/2a .......conrinu

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