sum of roots
When finding b (the sum of the roots) and the roots are given to you, do u take into acount their signs (negative, positive)? Do you switch the signs or just add them with their original signs?
posted by Elena at 11:07 PM
1 Comments:
The coefficient of "x" in a quadratic is -(r1+r2). Therfore you simply take the additive inverse of the sum of the roots to find b.
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