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2015-06-01T20:50:50+08:00

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A quadratic equation is shown as:
ax²+bx+c=0

1) -2x²+2x-7=0
2) -2x²-6x+5=0
3) x²+7x+12=0
4) 2x²-6x-15=0
5) x²+3x-49=0

1 5 1
how did you get that?
Oh, I'm sorry it is by subtracting/adding on both sides or simply multiplying by FOIL method or by distributive property
tnx again..
Welcome :)