Question 1027817
Hi there,
7x(x+2)+5=3x(x+1)    
7x^2 + 14x + 5 = 3x^2 + 3x
7x^2 - 3x^2 + 14x - 3x + 5 + 0
4x^2 + 11x + 5 = 0
Solve using:-
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
a = 4, b = 11 and c = 5
{{{x = (-11 +- sqrt( 11^2-4*4*5 ))/(2*4) }}}
{{{x = (-11 +- sqrt( 121 - 80 ))/(8) }}}
{{{x = (-11 +- sqrt( 41 ))/(8) }}}
{{{x = (-11 + sqrt( 41 ))/(8) }}} : {{{x = (-11 - sqrt( 41 ))/(8) }}}
 x = -0.575    x = -2.175 (2 decimal places)
Hope this helps :-)