Will give medals (pic below)
which expression gives the solution of -5 + 2x^2 = -6x

Question

Will give medals (pic below)
which expression gives the solution of -5 + 2x^2 = -6x

mathmale · Answer

What have you done so far?

mathmale · Answer

I'd suggest you do the following:
1.  Group all terms on the left; on the right of your equation you should have 0.
2.  Re-arrange these three terms on the left in descending order.
3.  Type out here what you now have on the left side.

anonymous · Answer

opps I mean 2x^2  -6x  -5?

mathmale · Answer

This is OK, except that the sign of one of the terms is incorrect.  Can you find and fix this?

anonymous · Answer

Im not sure

mathmale · Answer

Your original equation was -5 + 2x^2 = -6x.
Add 6x to both sides of this equation.  Rearrange the terms on the left side in descending order by powers of x.

anonymous · Answer

so the 6x gets canceled out?

mathmale · Answer

What do you have, now that you've added 6x to both sides?

Your result should involve an x^2 term, an x term and a constant term.  

Arrange them in descending order by powers of x.

Obtain the coefficient values a, b and c (from ax^2 + bx + c), from your expression.

Then plug those into the quadratic formula.