Question

$-x^2+2x=-3$ ??? 

Answer 1

-x^2 +2x+3=0

delta=b^-4ac
delta=4-4*(-1)*3
delta=4+12
delta=16
rad din delta=4

x1=-b-rad delta/ 2a
x1=-2-4/(-2)
x1=-6/-2
x1=3

x2=-b+rad delta/ 2a
x1=-2+4/(-2)
x1=2/-2
x1=-1

Answer 2

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