This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A quadratic equation is shown as:

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 :)