Question

Solve x2 - 7x = -13.

Answer 1

write it first in 'standard form'
ax^2 + bx + c=0

Answer 2

\[ax ^{2} + bx +c =0\]

Answer 3

A plot and solution from Mathematica is attached.

Answer 4

@robtobey
did that help the asker to understand the process at all?

The tools you show are like using a calculator - it is no use if you don't know what question to ask..

Better at this stage to work through the process of solving quadratics and understanding discriminants etc. until the asker can use the tools effectively themself