Question

quadratic formula for x^2-7x+2=0

Answer 1

\[\Large x=\frac{-B\pm\sqrt{B^2-4AC}}{2A}\]



\[\Large x=\frac{-\left(-7\right)\pm\sqrt{\left(-7\right)^2-4\left(1\right)\left(2\right)}}{2\left(1\right)}\]



\[\Large x=\frac{7\pm\sqrt{49-8}}{2}\]



\[\Large x=\frac{7\pm\sqrt{41}}{2}\]



\[\Large x=\frac{7\pm\sqrt{41}}{2}\]



\[\Large x=\frac{7+\sqrt{41}}{2} \ \text{or} \ x=\frac{7-\sqrt{41}}{2}\]

Answer 2

first line you have should be +49/4 on the end

Answer 3

yeah you caught it

Answer 4

thanks

Answer 5

np, probably why the quad formula is nicer to work with