Question 263142
If the 2 were a +, then we would have {{{(7g-2)(7g-2)}}} We cannot use our usual techniques here ,so we must apply the quadratic formula
{{{x = (28 +- sqrt( 784-4*49*(-4) ))/(98) }}}
and then
{{{x = (28 +- sqrt( 1568))/(98) }}}
and simplified as
{{{x = (28 +- 4sqrt(98))/(98) }}}
reduced we get
{{{x = (14 +-2sqrt(98))/49}}}