Can someone explain the changing of the signs on both side of the equation?
Accepted Solution
A:
The whole equation is multiply my -1.-2x2 + 5x + 5 = 0Now multiply it with -1.-1 (-2x2 + 5x + 5 = 0) and you get:2x2 - 5x - 5 = 0.It doesn't matter the answer will be the same.