Question

Use the Quadratic Formula to solve the equation.

–x2 + 7x = 8

Answer 1

a lot easier to solve
\[x^2-7x+8=0\]

Answer 2

\[-x^2 + 7x = 8 \] Pretty sure that's what you're trying to write.
Move everything to the right hand side to eliminate the minus sign of the x^2 and leave it in the form where it is EQUAL to ZERO.
\[x^2-7x+8=0\]
Use the quadratic formula and sub in the corresponding values.
\[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]
\[x=\frac{ 7 \pm \sqrt{49-32} }{ 2 }\]
\[x=\frac{7 \pm \sqrt{17} }{ 2 }\]

Answer 3

\[7/2+- \sqrt{34}/2 \]

Answer 4

is that it?

Answer 5

Where did you get \[\sqrt{34}\] from?

Answer 6

Wait its square root of 17. Not 34.

Answer 7

Good job mate. Good luck for future questions.

Answer 8

Thanks for helping (: