Question

Solve x2 - 7x = -13

Answer 1

I'm really bad at Solving Quadratic Equations w/ 0 as the leading coefficient

Answer 2

\[x ^{2}-7x=-13 ?\]

Answer 3

yeah sorry i forgot to include the ^

Answer 4

\[x ^{2}-7x+13=0\]
you can use the general solution
\[x_{1}= \frac{ -b+\sqrt{b ^{2}-4ac} }{ 2a }\]
\[x_{2}= \frac{ -b-\sqrt{b ^{2}-4ac} }{ 2a }\]
where
a=1
b=-7
c=13

Answer 5

so basically to solve these types of equations you just substitute and simplify with the quadratic formula?

Answer 6

It is the general method for quadratic equations (works for all the quadratic equations ..
but there are some equations where you could do other methods to factoring

Answer 7

There is another way, which is completing the square, but doing the quadratic formula is fine.

Answer 8

Thank you soon much!

Answer 9

soooo*

Answer 10

jaja, you're welcome :)

Answer 11

Hint: The answer has imaginary numbers. :)