Question 136930
Hi,

The given equation is x^2+4x=3
which can be written as x^2+4x-3=0

Using the quadratic formula here,

 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 

 {{{x = (-4 +- sqrt( 4^2-4*1*(-3) ))/(2) }}} 


{{{x = (-4 +- sqrt( 16+12 ))/(2) }}} 

{{{x = (-4 +- sqrt( 28))/(2) }}} 

==> x = -4.6, 0.6


Choice is (b)

good luck!!!

dolly