Posted by **Sarah** on Thursday, November 12, 2009 at 10:15pm.

Complete the square to Solve Quadratic Equation:

Solve the equation. Express the answer in simplest radical form.

-x^2-7x=-11

Please Help!!!! Thanks.

- trigonometry -
**Me (:**, Wednesday, November 18, 2009 at 9:55pm
-x^2-7x+11=0

you multiply all of it by -1 to change the x into postive.

therefore,

x^2+7x-11=0

then apply this to the fo9rmula

-b+- the sqaure root of (b^2 - 4*a*c)/2a

where a = 1

b=7

c=-11

work out the answer, its very easy (:

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