Verified Answer :

-5 + 2x² = -6x
rearrange the equation to the form ax² + bx + c = 0

=>  2x² + 6x - 5

use the quadratic formula to solve for the value(s) of x  \(-b ± \sqrt{ \frac{b^{2} - 4ac}{2a} }\)

=>   \(-6 ± \sqrt{ \frac{6^{2} - 4(2)(-5)}{2(2)} }\)

=>   \(-6 ± \sqrt{ \frac{36 - (-40)}{4} }\)

=>  \(-6 ± \sqrt{ \frac{76}{4} }\)

∴  x =  \(-6 + \sqrt{ 19} }\)      OR   x = \(-6 - \sqrt{19}\)
       
          x =  - 1.64 ;  x = - 10.36


Answer:

The solutions are

\(x1=\frac{-6+2\sqrt{19}}{4}\)      

\(x2=\frac{-6-2\sqrt{19}} {4}\)


Step-by-step explanation:

we have

\(-5+2x^{2} =-6x\)

rewrite the quadratic equation

\(2x^{2}+6x-5=0\)

The formula to solve a quadratic equation of the form \(ax^{2} +bx+c=0\) is equal to


\(x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}\)


in this problem we have


\(2x^{2}+6x-5=0\)

so


\(a=2\\b=6\\c=-5\)


substitute in the formula


\(x=\frac{-6(+/-)\sqrt{6^{2}-4(2)(-5)}} {2(2)}\)


\(x=\frac{-6(+/-)\sqrt{76}} {4}\)


\(x=\frac{-6(+/-)2\sqrt{19}} {4}\)


\(x1=\frac{-6+2\sqrt{19}}{4}\)      

\(x2=\frac{-6-2\sqrt{19}} {4}\)