Can anyone help me with this equation? Use Quadratic Formula -2x2 - 5x + 5 = 0

Question

ybarrap · Answer

$$
x=\cfrac{-b\pm\sqrt{b^2-4ac}}{2a}
$$
Where
$$
a=-2\
b=-5\
c=5
$$
This is the quadratic formula.

There will be two answers, due to the $\pm$ part.

ybarrap · Answer

$$
ax^2+bx+c=c
$$
Note that your equation is in this form, with the values for $a,b$ and $c$ above.

ybarrap · Answer

$$
x_1=x=\cfrac{-b+\sqrt{b^2-4ac}}{2a}
$$
Will be one solution.

The other will be,
$$
x_2=x=\cfrac{-b-\sqrt{b^2-4ac}}{2a}
$$

That it!

anonymous · Answer

thank you :)

ybarrap · Answer

$$
ax^2+bx+c=0
$$
 Note that your equation is in this form, with the values for $a,b$ and $c$ above.

ybarrap · Answer

That should have been a zero there at the end.

NP