Question #64b2f
1 Answer
Mar 23, 2016
Explanation:
To solve for
#y=-0.7428x^2+1.9437x-1.569#
Use the quadratic formula, which solves for
#y=ax^2+bx+c#
where
#x=(-b+-sqrt(b^2-4ac))/(2a)#
In the given quadratic, we see that
#{(a=-0.7428),(b=1.9437),(c=-1.569):}#
Thus,
#x=(-1.9437+-sqrt(1.9437^2-4(-0.7428)(-1.569)))/(2(-0.7428))#
#x=(-1.9437+-sqrt(-0.8838))/(-1.4856)#
Bring the negative out as
#x=(-1.9437)/(-1.4865)+-0.9401/(-1.4856)i#
#x=1.3083+-0.6324i#