Question

Complete the Square:
4x^2 - 10x - 9 = 0
4(x^2 - 10x/4 - 9/4)=0
therefore if 4(0)=0
x^2 - 10x/4 - 9/4 = 0
(x - 10/4)^2 - 100/16 - 36/16
(x - 10/4)^2 - 136/16
Where do I go from here? Am I doing it right?

Answer 1

no unfortunately

Answer 2

If you could help me on the right track on getting X=A OR X=B

Answer 3

\[x^2-\frac{5}{2}x=\frac{9}{4}\]
\[(x-\frac{5}{4})^2=\frac{9}{4}+\frac{25}{16}\] etc

Answer 4

first off i would write
\[\frac{5}{2}\] instead of
\[\frac{10}{4}\] but more important is that when you "complete the square" you have to take HALF the middle term to put inside the parentheses