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# C1 Question. Stuck... watch

1. Given p=-3
find the exact roots of (2p+5)x^2+px+1=0
I plugged -3 into the equation and the ended up with the equation:
-x^2-3x+1=0
From here, i dont know how to factorise it.
2. (Original post by Vinni0001)
Given p=-3
find the exact roots of (2p+5)x^2+px+1=0
I plugged -3 into the equation and the ended up with the equation:
-x^2-3x+1=0
From here, i dont know how to factorise it.
Bring all terms to the other side, or multiply by -1, then use the quadratic formula.
3. (Original post by NotNotBatman)
Bring all terms to the other side, or multiply by -1, then use the quadratic formula.
oh, right.
Thanks
4. (Original post by Vinni0001)
oh, right.
Thanks
Also, since it is C1 no calc, completing the square might be easier
5. (Original post by 123Master321)
Also, since it is C1 no calc, completing the square might be easier
Coolio, thanks

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